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Second-hand smoke is dangerous

Second-hand smoke is actually more dangerous than directly inhaled smoke. It’s harmful even when you cannot see or smell it. Here’s why:

Second-hand smoke releases the same 4,000 chemicals (50 are known to cause cancer) as smoke that is directly inhaled, but in even greater quantity. Second-hand smoke contains:
  • 2 times more tar which gums up lungs and breathing passages
  • 5 times more carbon monoxide, which reduces the amount of oxygen in the blood
Cigarettes burn for approximately 12 minutes, but smokers usually only inhale for 30 seconds. As a result, cigarettes are spewing second-hand smoke into the air for non-smokers and smokers to breathe.

Even after a cigarette is out, second-hand smoke remains in your surroundings such as furniture, carpets and toys and is still poisonous.

Air purifiers, ventilation systems, designated smoking areas or open windows do not provide enough protection from second-hand smoke.

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Last updated March 20, 2009