What Vaping Really Does to Your Lungs University of Utah Health Chemicals in vapes could be highly toxic when heated, research finds Vaping The Guardian Secondhand Vape Exposure: Effects, Who's at Risk, and More Vaping: Learn the Facts Canadian Lung Association Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Marijuana and Vaping: Shadowy Past, Dangerous Present The New York Times