4. Keep It Well Ventilated
Pollutants can be found in concentrations 2 to 5 times higher indoors than outdoors. Increasing the supply of fresh air can help reduce exposure to indoor asthma triggers, allergens, and other contaminants. Ventilating local sources of moisture or contaminants from showers, combustion from fireplaces, or cooking appliances can also reduce indoor exposures that can increase respiratory and other health risks. Proper sealing of all exterior ventilation points is also essential to preventing the intrusion of exterior pollutants into the building environment.