Does vaping cause popcorn lung? | Cancer Research UK

Popcorn lung (bronchiolitis obliterans) is a type of lung disease, but it is not cancer. Although popcorn lung is very rare, some e-cigarette users may worry about it. A link between breathing in a chemical called diacetyl was made when a cluster of popcorn factory workers were all found to have the rare lung condition.

https://www.cancerresearchuk.org/about-cancer/causes-of-cancer/cancer-controversies/does-vaping-cause-popcorn-lung