In secondhand vape, scientists smell risk American Heart Association Is 2nd Hand Vape Smoke Bad Is There 2nd Hand Smoke From Vapes Covid 19 Tobacco Smoke, Vaping, and Asthma AAFA.org The risks of vape pens' secondhand aerosols Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Secondhand Smoke and Electronic Cigarette Aerosols US EPA