A lot of what kids are hearing about vaping leaves out important details. What seems harmless or just flavored can still affect brain development, increase the risk of addiction, and impact lung Are e cigarettes fueling a new addiction? CNN 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 INFOGRAPHIC: How Dangerous Are E Cigarette Ingredients?