To be passive smoker may still be worse than active smoker, depending on the frequency with which the passive smoker is exposed to cigarette smoke and the concentration of the cigarette in the environment.
The loss of second-hand smoke are very close to those of active smoking, but to a lesser extent, since exposure is generally lower. To avoid being harmed, a non-smoker should be at least 15 meters from a smoker, in an open environment.
It is known that the smoke emanating from the tip of the cigarette contains the same toxic substances inhaled by the active smoker, only at a much higher concentration since it is not filtered. In addition, the passive smoker also inhales the smoke expelled by the smoker.
It is known that at least 43 substances present on cigarette smoke are carcinogenic and that second-hand smoke is the third-leading cause of preventable death, according to the World Health Organization (WHO), which lags behind only active smoking and excessive alcohol consumption.
People working in bars and restaurants have a greater and more frequent exposure to secondhand smoke, which in turn increases the risks of cigarette diseases.
The places where the passive smoker is most exposed to the risks of smoking are the indoor settings, such as bars, restaurants, workplaces and the house itself.
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