Secondhand Smoke and Electronic Cigarette Aerosols US EPA Secondhand Vape Exposure: Effects, Who's at Risk, and More What Does Vaping Do to Your Lungs? Johns Hopkins Medicine Sitting somewhere when a cloud of cotton candy vapor washes over you? If you can smell the sweet scent of a vape, that's not a great sign. Secondhand vape exposure: Risks and side effects Juul study shows secondhand vaping emissions are less toxic than cigarette smoke