1 min read
Invisible Series: What’s Really In Your Home – The Kitchen Edition
Find out what might be concealed in your kitchen and how to create a healthier space to cook, gather and nourish.
WORDS Elissa Rose
In this latest installment of our ‘Invisible Series’, we look at the kitchen, a room often considered the “heart of the home”, yet one that can also harbor a surprising number of hidden pollutants. The materials we choose for this hardworking space can affect indoor air quality, water quality and overall wellbeing.
Because the kitchen is used for preparing food, eating and gathering, it’s especially important to think beyond what is visible. Fumes from gas burners, chemicals released by cabinetry and paint, particles generated during cooking and contaminants in drinking water can all contribute to the invisible load. Good ventilation and effective filtration are therefore essential. A properly vented range hood, regular fresh air circulation and high-quality water filtration all play important roles in creating a kitchen that supports health as much as function.
APaint
WHAT'S IN IT: Paint can be a source of indoor air pollution in the kitchen due to the release of Volatile Organic Compounds (VOCs) into the air. VOCs are chemicals that evaporate at room temperature and may continue off-gassing long after the paint has dried. Kitchens are also often painted with finishes marketed as mold-resistant or antimicrobial, which may contain additional biocides, fungicides or preservatives.
HEALTH IMPLICATIONS: Exposure to VOCs can contribute to headaches, dizziness, throat irritation and respiratory discomfort. Long-term exposure to certain VOCs has also been associated with neurological symptoms, endocrine disruption and increased cancer risk. Biocides and antimicrobial additives may also present concerns. While they are designed to inhibit microbial growth, they can contribute to allergic reactions and may interfere with the balance of beneficial microbes in the home environment. For sensitive individuals, especially children, pregnant women or those with asthma, repeated exposure to these compounds may be particularly problematic.
HEALTHY ALTERNATIVES: Choose low-VOC or zero-VOC paints, and look for mineral paints that avoid synthetic additives. It’s also wise to avoid paints labeled as antimicrobial, antifungal or mold-resistant as these often contain additional pesticides. Look for third-party certifications such as Green Seal-11, which helps ensure the paint limits VOCs, harmful biocides, lead, mercury and certain carcinogens. Even with healthier paints, ensure strong ventilation during and after application by opening windows and using fans to help clear emissions.
BFlooring
WHAT'S IN IT: Kitchen flooring can contain a range of hidden chemicals depending on the material. Vinyl flooring is often made with PVC and may contain phthalates, which are used to increase flexibility and durability. Laminate flooring and some engineered wood products may contain adhesives or resins that emit formaldehyde and other VOCs. Because kitchen floors must withstand spills, moisture and heavy foot traffic, many conventional options are treated with stain-resistant coatings, synthetic sealers or chemical finishes designed to improve durability.
HEALTH IMPLICATIONS: Formaldehyde exposure has been linked to respiratory irritation, allergic reactions and an increased risk of certain cancers with prolonged exposure. Phthalates are associated with endocrine disruption and may affect reproductive and developmental health. VOCs released from adhesives and finishes can also worsen indoor air quality. Young children, who are closer to the floor and more likely to crawl or play nearby, may be particularly vulnerable.
HEALTHY ALTERNATIVES: Natural stone, sealed ceramic tile, solid hardwood finished with low-VOC products and natural linoleum are all healthier flooring choices for the kitchen. If you choose engineered wood, look for products that are Greenguard Gold certified or explicitly made with low-formaldehyde adhesives. Avoid vinyl wherever possible, especially products made with PVC. Choose water-based sealants and adhesives, and ventilate the space thoroughly during and after installation.
CTiling
WHAT'S IN IT: Tiles themselves are often relatively stable, but the materials used alongside them can introduce hidden concerns. Grouts, adhesives, mastics and sealants may contain VOCs, formaldehyde and other chemical additives. Some glazes, particularly in imported or poorly regulated products, may also contain lead or cadmium, especially if they are decorative or handmade. In kitchens, tile is commonly used for backsplashes, walls and floors, meaning it often covers a significant surface area. This makes the choice of installation materials just as important as the tile itself.
HEALTH IMPLICATIONS: Among other symptoms, VOC emissions from tile adhesives and sealants can contribute to nausea, allergies and fatigue. Lead and cadmium exposure are especially concerning, as these heavy metals can accumulate in the body over time and are associated with neurological, developmental, cardiovascular and kidney-related health effects. Although tile is generally considered a healthy and low-maintenance material, the invisible risks often come from what holds it in place or coats its surface rather than the tile alone.
HEALTHY ALTERNATIVES: Opt for ceramic, porcelain or natural stone tiles from reputable manufacturers with clear material transparency. Look for low-VOC adhesives, grouts and sealants, and choose food-safe glazes if tiles are being used in any area near food preparation or serving. Avoid heavily coated or imported decorative tiles without clear safety standards, particularly if they may come into contact with food or water.
DCabinetry
WHAT'S IN IT: Cabinetry can be a source of chemical emissions in the kitchen, particularly when made from medium-density fiberboard, particleboard or plywood. These composite wood products are often manufactured with urea-formaldehyde resins that can off-gas over time. Cabinet finishes, stains, lacquers and paints may also release VOCs into the air. Laminate worktops are often made with layers of synthetic materials bonded with adhesives and resins, which may emit formaldehyde. The substrate beneath the laminate is also frequently made from composite wood, adding another potential source of emissions.
HEALTH IMPLICATIONS: Among other symptoms, VOC emissions from tile adhesives and sealants can contribute to nausea, allergies and fatigue. Lead and cadmium exposure are especially concerning, as these heavy metals can accumulate in the body over time and are associated with neurological, developmental, cardiovascular and kidney-related health effects. Although tile is generally considered a healthy and low-maintenance material, the invisible risks often come from what holds it in place or coats its surface rather than the tile alone.
HEALTHY ALTERNATIVES: Depending on your budget, choose cabinetry made from solid wood or from low-emitting engineered products certified by Greenguard Gold or CARB Phase 2. If this isn’t feasible, changing doors and drawer fronts can still make a big difference. Opt for unfinished or minimally finished cabinetry where possible, and select water-based stains, paints and sealants instead of solvent-based products. For countertops, consider solid wood sealed with a food-safe finish, natural stone or stainless steel.
EKitchen Hardware
WHAT'S IN IT: Kitchen hardware includes handles, knobs, faucets, sinks and the smaller metal details that are touched every day. While these items may seem inert, some can contain lead, nickel, chromium or other heavy metals. Faucets and plumbing fixtures may also leach contaminants into water and because water is such a central part of kitchen use, filtration is crucial. Even if the hardware itself is sound, tap water can contain chlorine byproducts, heavy metals, PFAS, microplastics or other contaminants depending on the area.
HEALTH IMPLICATIONS: Repeated exposure to heavy metals through water or worn finishes may pose long-term health concerns, particularly for children. Lead is especially problematic, as even low levels of exposure have been associated with developmental and neurological effects. Poor water quality can also affect more than just drinking water. It influences cooking, washing produce and making tea or coffee, meaning it becomes part of daily intake in multiple ways.
HEALTHY ALTERNATIVES: Choose solid stainless steel, untreated brass or high-quality metal hardware from brands with clear material transparency. Look for faucets and fixtures that meet NSF or similar safety standards for drinking water contact. For water quality, a high-quality water filter is one of the most meaningful upgrades you can make in the kitchen. Depending on your needs, this may be a countertop filter, under-sink filtration system or reverse osmosis unit.
FAppliances
WHAT'S IN IT: Appliances can affect the health of a kitchen in several ways. Gas stoves release nitrogen dioxide, carbon monoxide and particulate matter during use, while ovens and toasters can produce combustion byproducts and smoke particles. Nonstick coatings used in some small appliances, such as air fryers, sandwich presses and toaster ovens, may also contain fluorinated chemicals. Microwaves, blenders and coffee machines may include internal plastic components that come into contact with heat, steam or food. Plastics degrade over time, especially with repeated heating and washing.
HEALTH IMPLICATIONS: Cooking itself can generate a significant amount of indoor air pollution, particularly when frying, roasting or cooking over gas. Without adequate ventilation, this can contribute to poor indoor air quality and may worsen asthma and other respiratory issues. Plastic components and damaged nonstick coatings may raise concerns around chemical migration into food, particularly when exposed to high temperatures.
HEALTHY ALTERNATIVES: Induction cooktops are generally considered one of the healthiest options, as they avoid combustion and tend to improve indoor air quality compared with gas. If you use gas, a properly vented range hood that exhausts to the outside is especially important. For small appliances, look for options with stainless steel, glass or ceramic food-contact surfaces where possible. Be mindful of plastic components in appliances used at high heat.
GWindow Treatments
WHAT'S IN IT: Kitchen window treatments can accumulate grease, dust, moisture and airborne particles over time. Some synthetic blinds and shades may contain PVC, flame retardants, stain-resistant finishes or chemical coatings that emit VOCs. Fabrics used for café curtains or Roman blinds may also be treated with wrinkle-resistant, antimicrobial or water-repellent finishes. Because kitchens are exposed to steam, cooking odors and changing temperatures, these treatments can act as reservoirs for both allergens and airborne pollutants.
HEALTH IMPLICATIONS: Dust and grease buildup can reduce air quality and aggravate allergies or respiratory sensitivities. Mold and mildew may also develop in damp or poorly ventilated kitchens, especially around windows. Chemical finishes can contribute to VOC exposure, which carries indoor air quality concerns. Although window treatments are often chosen for softness and visual warmth, they are still part of the material environment and can influence how healthy the kitchen feels.
HEALTHY ALTERNATIVES: Roman blinds made from linen or organic cotton, untreated timber blinds and café-style curtains made from washable natural fabrics are all healthier choices for the kitchen. These options tend to be easier to clean and less likely to contain problematic coatings than synthetic alternatives. Look for fabrics such as linen or hemp certified by OEKO-TEX or GOTS, and avoid treatments marketed as stain-resistant, antimicrobial or wrinkle-free.
HFurniture
WHAT'S IN IT: For kitchens with dining tables, stools or other wood furniture, the same concerns that apply elsewhere in the home still matter here. Composite wood products such as MDF, particleboard and plywood may release formaldehyde from the adhesives used in their construction. Finishes, stains and varnishes can also emit VOCs, especially if they are solvent-based. In a kitchen, these materials may be exposed to heat, steam and sunlight, all of which can influence how they wear and what they release over time.
HEALTH IMPLICATIONS: Formaldehyde and VOC exposure can contribute to respiratory irritation, headaches and reduced indoor air quality. In spaces where meals are prepared and shared, these exposures may feel especially counterintuitive, as the room is associated with nourishment and comfort. Furniture placed in eat-in kitchens is often used daily and in close contact with the body, making it worth choosing materials that support long-term wellbeing rather than simply aesthetics or convenience.
HEALTHY ALTERNATIVES: Choose solid wood furniture finished with natural oils or low-VOC sealants whenever possible. Avoid particleboard and MDF, particularly in pieces that will sit close to food preparation or eating areas. Natural finishes such as linseed oil or beeswax-based treatments can offer a healthier alternative to conventional varnishes and lacquers. As with cabinetry, look for transparency around materials and finishes, and prioritize quality pieces designed to last.
IUpholstered Furniture
WHAT'S IN IT: Banquettes, dining chair cushions and upholstered seating can introduce a range of hidden chemicals into the kitchen. Some upholstery fabrics are treated with PFAS to make them stain-resistant or water-repellent, while foam fillings may contain flame retardants and adhesives that release VOCs. Synthetic fabrics and vinyl coatings may also contain phthalates or other plasticizers. Because kitchen seating is often chosen for practicality, stain resistance and wipeability, it can sometimes be more chemically treated than upholstered furniture in other parts of the home.
HEALTH IMPLICATIONS: PFAS have been linked to endocrine disruption, liver effects, immune system changes and certain cancers. Flame retardants may also interfere with hormone health and neurological development. Since kitchen seating is used frequently and often placed close to where food is eaten, reducing these exposures can help create a more supportive and less chemically burdened environment.
HEALTHY ALTERNATIVES: Look for upholstery made from natural fibers such as linen, hemp, wool or organic cotton, and avoid fabrics treated with stain-resistant or water-repellent finishes. For banquettes and cushions, choose fillings made from natural latex, wool, coconut coir or other low-toxicity materials where possible. Removable, washable covers can be a practical way to maintain durability without relying on chemical coatings. In kitchens especially, easy cleaning does not need to come at the expense of healthier material choices.
Image: WLLW
