Popcorn lung: What is it, and who is at risk? Harvard Health Popcorn Lung Vape Warning: What You Need to Know Simpol.ph 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. The Return of Popcorn Lung? Let's Discuss My Vapery UK Popcorn Lung: A Dangerous Risk of Flavored E Cigarettes American Lung Association