Harvard Health Tips

Avoiding second-hand smoke

Nicotine in cigarette-smoke residue clings to walls, carpets, clothing, and other surfaces. It can react with nitrous oxide, a common indoor air pollutant, to form cancer-causing compounds called tobacco-specific nitrosamines that can persist for months. If you live with a smoker who can?t or won?t quit, ask him or her to smoke outside.…

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