Vaping and Popcorn Lung: What You Need to Know About a Hidden Risk Popcorn Lung: A Dangerous Risk of Flavored E Cigarettes American Lung Association Uncovering Hidden Risks: Popcorn Lung and Vaping Dangers Vaping has officially been linked to a rare and irreversible lung disease known as bronchiolitis obliterans, more commonly referred to as popcorn lung. This condition causes scarring and inflammation of the small