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Passive Smoking

Choosing to smoke and destroying your own health is one thing but passive smoking, also known as Environmental Tobacco Smoke (ETS) or Secondhand Smoke (SHS), damages the health of those around you. These people have no choice as to whether or not they are exposed to your harmful smoke. Passive smoking constitutes a serious public health risk to both children and adults. It is also a major source of indoor air pollution. A non-smoker is subjected to both the "sidestream" smoke from the burning tip of the cigarette and the "mainstream" smoke that has been inhaled and then is exhaled into their environment by the smoker. Nearly four-fifths of the smoke that builds up in a room containing a smoker is of the more harmful "sidestream" type.

It is not too much of a conceptual leap to understand that the smoke from cigarettes, which is so bad for the smoker, is also damaging to everyone else. Tobacco smoke contains over 4000 chemical compounds, including at least 40 cancer-causing carcinogenic agents. Tobacco smoke also contains carbon monoxide, a poisonous gas, which inhibits the transportation of oxygen to the body's vital organs via the blood. The smoke emitted from the tip of a cigarette has about double the concentration of nicotine and tar as the smoke being directly inhaled by the smoker. It also contains about three times the amount of the carcinogen benzo(a)pyrene, five times the level of carbon monoxide and about 50 times the amount of ammonia. Add to these the other chemicals in the smoke like arsenic, formaldehyde, vinyl chloride, and hydrogen cyanide and you have a very unappetizing toxic gas cocktail. Remember that the passive smoker receives all of this and gets none of the enjoyment that you get out of smoking in return. Many of the potentially toxic gasses in the smoke are present in higher concentrations in the "sidestream" smoke than in the "mainstream" smoke. In tests tobacco specific carcinogens have been found in samples of blood or urine provided by non-smokers who have been exposed to passive smoking.

http:// www.bbc. co. uk/news/health-11844169

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