Tobacco smoke is unhealthy for everyone, especially people with asthma. If you have asthma and you smoke, quit smoking.
“Secondhand smoke” is smoke created by a smoker and breathed in by a second person. Secondhand smoke can trigger an asthma attack. Make your home a smoke-free zone. Encourage household members who smoke to quit. If you have asthma, people should never smoke near you, in your home, in your car, or wherever you may spend a lot of time.
Dust mites are microscopic bugs that are in many homes. If you have asthma and are allergic to dust mites, they can trigger an asthma attack. To prevent attacks: