How Bad Is Second Hand Vape Smoke Secondhand e cigarette aerosols expose kids to less nicotine Does Vaping Cause Lung Cancer? What We Know (and Still Don't) There are no safe tobacco products, and yes, that includes vapes. The sleek, battery powered devices heat up liquid packed with nicotine and other harmful chemicals that turn into an aerosol you inhale New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking 3 Charts Visual Study: The Link Between Vaping and Smoking in Kids