Americans spend more than 90 percent of their time indoors, often exposed to indoor air pollution at levels two to five and sometimes 100 times higher than outdoor levels. Fortunately, there are steps that can be taken to prevent or reduce indoor pollutants in the home. Environmental tobacco smoke can cause cancer and other health problems.
Good ventilation reduces indoor air pollution.
Leave doors between rooms open most of the time for better air circulation. Partially open the windows when possible to allow for a good supply of outdoor air. Keep humidity levels appropriately low with a dehumidifier or air conditioner. Clean both regularly so that they don't become pollution sources themselves. Carpets can absorb moisture and serve as a place for biological pollutants to grow, posing a serious threat to people with allergies and some lung disease.