What Chemicals Does Vaping Cause Popcorn Lung? : R Vaping Is Popcorn Lung Irreversible What Chemicals Does Vaping Cause Popcorn Lung? : R Vaping Is Popcorn Lung Irreversible Health experts are sounding the alarm about a serious condition linked to vaping, known as "popcorn lung" or bronchiolitis obliterans. This irreversible lung disease is caused by harmful chemicals, like diacetyl, found Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Popcorn lung: how vaping could scar your lungs for life