Does Vaping Cause Secondhand Smoke? Is Second Hand Vape Smoke Harmful To Children Where You Learn Smoke Free Environments Is Vaping as Bad for Your Health as Smoking? Connect Community BCBSIL 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 According to the American Heart Association, the risks of secondhand smoke from vapes are still being discovered. Learn about the dangers of secondhand smoke from vapes.