How to Air Out Cigarette Smoke

• University of Kentucky Cooperative Extension: Odors: What's That Smell?
• Good Housekeeping: How to Remove Cigarette Smoke Odor

To get rid of lingering smell, consider placing small containers of white vinegar around the room(s) where the smell is. Wash the walls and furniture, as the tar from the cigarettes will stick to any surface. You can also put cat litter in the ashtrays around the home to help eliminate the "dirty ashtray" smell.

Dust baking soda or dry carpet cleaner over your carpets and upholstery, and allow to sit before vacuuming up.

cigarette image by bright from Fotolia.com