Secondhand SmokeSecondhand smoke is made up of smoke from the end of a burning cigarette and smoke exhaled by a smoker. It contains more than 700 chemicals, including hundreds that are toxic and about 70 that can cause cancer.Breathing secondhand smoke is as dangerous as smoking. There is no safe level of exposure to secondhand smoke. Even brief exposure can be harmful. In NYC, there are several laws that protect residents from secondhand smoke:/.../ |
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