In tobacco has a lot of substance and toxic gas not only for the health of smokers (current smokers), but also those around them (passive smoking) is also the same as the toxic gas Smoking as Nicotine, Carbon Monoxide (CO), tar, benzene, formaldehyde, ammonia, acetone, arsenic, hydrogen cyanide, small molecules in tobacco smoke, the carcinogen. However, tobacco smoke contains more than 3,800 chemicals, including more than 200 kinds of harmful for health.
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