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. Popcorn Lung: The Zombie Vaping Myth That Refuses to Die Ah yesvaping studies saying they contain diacetyl. : r Vaping Geek Bar Ingredients List Full Breakdown by Flavor (2026) VapeDeal.com The Misconceptions of Vaping The Truth Popcorn lung: What is it, and who is at risk? Harvard Health