Juul study shows secondhand vaping emissions are less toxic than cigarette smoke First, Second and Thirdhand Smoke: The Differences and Dangers Tobacco Stops With Me Avoiding Tobacco Smoke and E Cigarette Aerosol Is a Key Part of Asthma Management Asthma and Allergy Foundation of America Dangers associated with e cigs Poison Control Can Smoking and Vaping Cause Back Pain? National Spine Health Foundation ADHD symptoms may boost teens' risk of vaping or smoking