E cigarettes pose threat to users' and bystanders' health Novant Health Healthy Headlines Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Scientists Warn Against Breathing in Secondhand Vape 'Smoke' Newsweek Avoiding Tobacco Smoke and E Cigarette Aerosol Is a Key Part of Asthma Management Asthma and Allergy Foundation of America Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals Does Vaping Cause Secondhand Smoke?