Ontario teen's vaping injury consistent with 'popcorn lung,' study suggests CBC News The Effects of Vaping and Smoking Weed on the Lungs Human STEAM Popcorn Lung: The Deadly Secret in Your Vape! Did you know that the sweet, tempting flavor in your e liquid could be hiding a chemical called Diacetyl? This chemical, which tastes Ontario teen's vaping injury consistent with 'popcorn lung,' study suggests CBC News