Secondhand smoke is inhaling exhaled smoke from burning tobacco products, such as cigarettes, cigars, or pipes. Cigarette smoke may contain more than 7,000 chemicals, with around 70 that are known to cause some form of cancer. There are currently no known recommended risk-free level of secondhand smoke exposure. Even if you are exposed to it for a short time, there is harm done to your health. Young children are especially vulnerable to the harm caused by secondhand smoking. The exposure can cause health issues such as ear infections, more frequent and severe asthma attacks, respiratory infections and greater risk of sudden infant death syndrome (SIDS) in children. Secondhand smoking can cause heart diseases, lung cancer and stroke in non-smoking adults. It is thus important for us to educate our children about the dangers of secondhand smoking and to ensure that smokers do not smoke in your car or in your home.