Is Second Hand Vape Smoke Harmful To Children Where You Learn Smoke Free Environments ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine, Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Early research says secondhand smoke from vaping may not be as bad as cigarettes, but it's still not harmless. https: fox59.com news national world does vaping cause secondhand smoke doctors explain the side effects HEALTH Does vaping cause secondhand smoke? Doctors explain the side effects: Details below.