Secondhand vape plumes could form lung damaging radicals American Chemical Society Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM Scientists Warn Against Breathing in Secondhand Vape 'Smoke' Newsweek Millions of people are exposed to secondhand smoke every day. People living in multi unit housing are some of the most exposed. The only way to fully protect people from secondhand smoke at Second hand smoke from e cigarettes 'poses NO risk to the public' Daily Mail Online Is Second Hand Vape Smoke Dangerous? RxLeaf