The Impact of E Cigarettes and Asthma: What You Need to Know While early research suggests it may not be as dangerous as secondhand smoking, it's still not harmless, experts say. https: www.wate.com news does vaping cause secondhand smoke doctors explain the side effects ?utm_medium=social&utm_source Vaping is less harmful than smoking, experts say. Why don't smokers know this? Scienceline Second hand vape smoke linked to more asthma symptoms in kids Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA E cigarettes may actually be worse for your heart than regular cigarettes MarketWatch