Are Geek Bars Dangerous & Are There Alternatives? Essentia Pura 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. Do Cigarettes Cause Popcorn Lung Popcorn Lung Reversable At Raymond Stucky Blog What Causes Popcorn lung: What is it, and who is at risk? Harvard Health