Secondhand smoke is the smoke inhaled when we are in close proximity to a smoker. Secondhand smoke is harmful to both nonsmokers and smokers.

According to statistics and analyses, secondhand smoke contains more than 4,000 chemicals, at least 50 of which are carcinogenic; Non-smokers who live with smokers have a higher risk of developing heart disease; children living with smokers are more likely to develop bronchitis and pneumonia; and children—especially infants—who live with smokers are at a higher risk of developing illnesses such as colds, respiratory infections, and ear infections.

Compared to the amount inhaled by active smokers, secondhand smoke contains higher levels of carbon monoxide and tar.

It contains higher levels of ammonia, benzene, and various other hazardous chemicals. Advertisements for low-tar and low-nicotine cigarettes do not mean they are safer, as they release the same amount of toxic chemicals into the air.

Smokers have a higher risk of miscarriage, stillbirth, premature birth, and giving birth to low-birth-weight infants.

Therefore, even if we do not smoke ourselves, we still need smoke-free environments in offices, restaurants, and other public places.

By Michael Chiu, MWS, CI
Previously published in Ming Pao Daily News