Evidence Mounts About the Health Impact of Second Hand Vaping Bisnar Chase Secondhand Smoke and Electronic Cigarette Aerosols US EPA Vaping vs. Smoking: Is One Really Safer Than the Other? Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM TobaccoControlYouthEngagement Vaping can cause severe lung complications, which in some cases can be fatal The tobacco epidemic is one of the biggest public health threats the world has ever faced, killing 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.