Vaping, Diacetyl, and Popcorn Lung: Is the Threat Real? Vaping360 Bronchiolitis obliterans, commonly known as 'popcorn lung', is an inflammatory lung disease that can cause dry cough, shortness of breath, and wheezing. So how does it get its name? 'Popcorn lung' Watchdog Report Gasping for Action Do Crystal Bar Vapes Have Diacetyl? Vapor Shop Direct Popcorn Lung: A Dangerous Risk of Flavored E Cigarettes American Lung Association