Popcorn Lung: A Dangerous Risk of Flavored E Cigarettes American Lung Association A recent case involving a U.S. teenager who developed Bronchiolitis Obliterans, commonly called popcorn lung, after three years of secretly vaping has raised serious concerns about the risks of e cigarettes. This irreversible Imaging Findings of Vaping Associated Lung Injury AJR Life threatening bronchiolitis related to electronic cigarette use in a Canadian youth