cigarette smoke stains on walls Viral TikTok shows before-and-after cleaning of 21 years of cigarette smoke How to Clean Cigarette Smoke

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Here is what changes when you stop: Within 48 hours: Blood flow to your gums begins to improve, and your sense of taste and smell start returning Within 2 to 4 weeks: Gum inflammation starts to decrease and healing from dental procedures improves significantly Within 3 to 6 months: Your risk of gum disease begins to decline, and new stains stop forming After 1 year: Your risk of periodontal disease drops substantially, and existing stains can be fully treated with whitening After 5 to 10 years: Your oral cancer risk drops to nearly the same level as someone who never smoked Even if your teeth are heavily stained, quitting prevents further damage and makes all whitening treatments more effective and longer lasting

1 2 3 "Electronic Cigarette Fires and Explosions in the United States 2009 - 2016" (PDF)

All study participants were adults above 21 years of age, smoked between five and 40 cigarettes each day, and were physically and mentally sound without alcohol or drug abuse histories