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 from vaping could be harmful to children: study ABC13 Houston Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Vape Smoke 220w Risk From Second Hand Smoke On Children Greater Than Previously Thought Second Hand Smoking From Vaping Is Second Hand Vaping Harmful? EDGE Vaping