The Challenges of Cancer Misinformation on Social Media NCI Fake news alert: WHO updates its post truth fact sheet on e cigarettes The Counterfactual Popcorn Lung: A Dangerous Risk of Flavored E Cigarettes American Lung Association Experts warn that flavored e cigarettes can cause irreversible lung damage, as seen in a U.S. teenager who developed "popcorn lung"a severe and permanent condition called bronchiolitis obliteransafter secretly vaping for three years.