Vapers Beware: Exploring the Threat of Popcorn Lung Doctors have linked vaping to a rare, incurable lung condition called obliterative bronchiolitis, often referred to as popcorn lung. The disease permanently scars and narrows the lungs' airways, causing lifelong breathing problems. Health Risks of Vaping: Electronic Cigarettes Now and Later Alabama Cooperative Extension System Popcorn Lung: A Dangerous Risk of Flavored E Cigarettes American Lung Association Canadian teen developed 'popcorn lung' type injury from vaping report Reuters