11 Ways to Improve Your Home’s Air Quality

Circulate, Circulate

Even when the weather is cool, open the windows to let in fresh air (especially while you're cleaning, cooking, or painting). If it's simply too cold, run ceiling fans to keep air circulating.

And don't forget to flip on the exhaust fan while you cook. Otherwise, noxious vapors, grease, and smoke are released into the air where they'll linger.