Medical professionals are warning about bronchiolitis obliterans, commonly called "popcorn lung," a serious and permanent lung condition increasingly associated with vaping. The condition damages the smallest airways in the lungs, causing symptoms Popcorn lung: Causes, symptoms, and treatment The Mysterious Vaping Illness That's 'Becoming an Epidemic' The New York Times What is Popcorn Lung, and Can it Be Caused by Using Marijuana? Can Vaping Cause Lung Cancer or Other Diseases? Essentia Health What is Popcorn Lung? Galaxy Vapes Inc.