First, Second and Thirdhand Smoke: The Differences and Dangers Tobacco Stops With Me We protect kids from cigarette smokelet's do the same with vaping. Secondhand vape isn't harmless, here is what parents need to know: https: www.undo.org disease secondhand vape Secondhand Smoke Vermont Department of Health 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.