Secondhand Vape Exposure: Effects, Who's at Risk, and More Vaping refers to the act of inhaling and exhaling aerosol, often called vapor, produced by an electronic cigarette or similar device. These devices heat a liquid that usually contains nicotine, flavorings, and Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association Evidence Mounts About the Health Impact of Second Hand Vaping Bisnar Chase 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 E Cigarettes Vaping with Juul & Other Electronic Cigarettes