Recent medical research and case studies have increasingly linked vaping to bronchiolitis obliterans, a rare, irreversible, and potentially fatal lung disease often referred to as popcorn lung. This condition causes permanent scarring While vaping is not risk free, it is less harmful than tobacco Our World in Data 7 things you should know about bronchitis In secondhand vape, scientists smell risk American Heart Association Prevalence of vaping, vaping associated short term symptoms of respiratory and cardiovascular morbidities, and factors associated with the initiation of vaping among young adults in Kuwait