Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA Is Secondhand Vape Smoke Harmful Secondhand Vape Exposure: Effects, Who's At Risk, And More Australia Is Second Hand Vaping Dangerous Secondhand nicotine vaping at home and respiratory symptoms in young adults Thorax Tobacco Smoke, Vaping, and Asthma AAFA.org Juul study shows secondhand vaping emissions are less toxic than cigarette smoke