About Secondhand Smoke and Asthma

Secondhand smoke is the smoke from a cigarette, cigar, or pipe, that is exhaled by a smoker. Secondhand smoke contains more than 4,000 substances, including several compounds that cause cancer.

Secondhand smoke can trigger asthma episodes and increase the severity of attacks. Secondhand smoke is also a risk factor for new cases of asthma in pre-school-aged children. Children's developing bodies may make them more susceptible to the effects of secondhand smoke. Due to their small size, they breathe more rapidly than adults, thereby taking in more secondhand smoke. Children receiving high doses of secondhand smoke, such as those with smoking parents, run the greatest relative risk of experiencing damaging health effects.

Actions You Can Take

• Don't let anyone smoke near your child.
• If you smoke — until you can quit, don't smoke in your home or car.