Is Second Hand Vape Smoke Bad For You? Learn How to Avoid its Side Effects Secondhand Vape Exposure: Effects, Who's at Risk, and More 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. Early research says secondhand smoke from vaping may not be as bad as cigarettes, but it's still not harmless. https: fox59.com news national world does vaping cause secondhand smoke doctors explain the side effects Secondhand Smoke vs Vape: What the Science Says