Photo © Stockxpert Definition: Secondhand smoke is the term used to describe tobacco smoke that comes from two sources: smoke that is exhaled by the smoker after puffing on a lit cigarette (mainstream smoke)Secondhand smoke contains upwards of 4000 chemicals, including 200 known poisonous chemicals, and 60 carcinogenic chemical compounds.
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Also Known As: ETS, second-hand smoke, second hand smokeCigarette Smoking and Your Healthif(zSbL
