Implementing some of the control measures listed below will help improve indoor air quality. Ask smokers to confine smoking outdoors. Leave doors between rooms open most of the time. Leave some windows partially open when possible. Install exhaust fans in bathrooms.
Fit gas ranges with hood fans that exhaust outside.
Use the fan or open a window while cooking. Install outdoor air intake to return air duct work of forced-air system. Have furnace, gas water heater and clothes dryer inspected regularly. Clean air-conditioners, humidifiers, and heat exchangers regularly. Test for radon levels in your home.