First, Second and Thirdhand Smoke: The Differences and Dangers Tobacco Stops With Me Secondhand smoke and vape can trigger your child's asthma attacks. Smoking and vaping are unhealthy for everyone but especially harmful for people with asthma. Whether at home, in the car, or Does Vaping Cause Secondhand Smoke? Avoiding Tobacco Smoke and E Cigarette Aerosol Is a Key Part of Asthma Management Asthma and Allergy Foundation of America