Popcorn lung. Vaping lung injury. Lets stop confusing the two., Popcorn lung is the lazy name for bronchiolitis obliteransa disease of the small airways, not the alveoli. , It got its name from 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 Bronchiolitis obliterans, commonly known as 'popcorn lung', is an inflammatory lung disease that can cause dry cough, shortness of breath, and wheezing. So how does it get its name? 'Popcorn lung' Canadian teen developed 'popcorn lung' type injury from vaping report Reuters