Secondhand vape plumes could form lung damaging radicals American Chemical Society Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Is Second Hand Vape Smoke Harmful Smoke Harmful Can Breathing In Secondhand Vape Cause Your Hemoglobin E Cigs and Second Hand Vaping: Dangers and Protections Have you ever breathed in secondhand vapor from a vape? What exactly are you inhaling? It turns out it's a lengthy list of chemicals. FULL STORY Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London