The most toxic thing in a home are air fresheners, which contain volatile organic compounds also known as VOCs.
Volatile organic compounds are found in many air fresheners, scented candles, cleaning sprays, paints and varnishes, which can cause irritation and potential cancer risks.
Other most toxic things in a home are plastics, cleaning supplies, BPA, phthalates, non stick cookware, PTFE, pesticides, and older materials like lead paint or formaldehyde containing furniture, which all release chemicals that cause respiratory issues as well hormonal issues and developmental issues.
Mold is also one of the most toxic things in a home and is a significant indoor hazard.
The severity also depends on exposure, age and individual health, although products like organic fragrances and certain plastics are top contenders for daily indoor air pollution.
Phthalates are found in PVC plastics including vinyl flooring, shower curtains, fragrances and some cosmetics, and are linked to hormone disruption and fertility issues.
Formaldehyde is emitted from pressed wood furniture, insulation and some fabrics, which is a known carcinogen.
PFAS or Per- and Polyfluoroalkyl Substances also known as forever chemicals in non stick cookware like Teflon and some food packaging and cosmetics and textiles are also toxic.
Lead is also a major toxic thing in homes and is a major risk in older homes, paint, pipes and is especially harmful to children's development.
Pesticides like bug sprays, weed killers and pet treatments contain toxic chemicals.
And non stick cookware contains PTFE, which releases toxic fumes when overheated, damaging lungs and organs.
And mold and mildew are fungi that releases toxic spores that trigger immune issues, breathing issues, sinus problems and allergies.