Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Second Hand Vaping Vape Smoke Free 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 Secondhand smoke and secondhand aerosol Evidence Mounts About the Health Impact of Second Hand Vaping Bisnar Chase