QuoteReplyTopic: Second-hand tobacco smoke Posted: July 22 2010 at 6:26am
Second-hand tobacco smoke also causes lung cancer. This is smoke
that comes from a burning cigarette or other tobacco product, or smoke that
is exhaled by smokers. People who inhale second-hand smoke are exposed to
the same cancer-causing agents as smokers, although in weaker amounts.
Inhaling second-hand smoke is called involuntary or passive smoking.
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