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. About one in four adults in California report being exposed to secondhand smoke or vape in the past two weeksoften on sidewalks, at home, and in recreational spaces like parks and beaches. Juul study shows secondhand vaping emissions are less toxic than cigarette smoke In secondhand vape, scientists smell risk American Heart Association