4.) Certain household products require proper ventilation to be used safely. Because of this, some household products may be contributing to poor indoor air conditions in your home.
5.) Poor ventilation on gas-burning ovens, stoves, and other appliances can also contribute to worse quality in the home.
6.) Lead and asbestos, more commonly found in older homes, can have a severe detriment to the health of all those living in that home, and particulates can be found in the air.
7.) Radon is a naturally occurring radioactive gas that can contaminate your air and drinking water. It contributes to poor air overall, and can create seriously detrimental health conditions, like an increased risk of cancer. You can’t see or smell radon gas, so the only way to detect if it’s present is to test for it. For more information on radon in the home, visit the CDC page here.