Does Vaping Cause Popcorn Lung? Canadian teen developed 'popcorn lung' type injury from vaping report Reuters 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 What is Popcorn Lung? Popcorn Lung is a serious, permanent lung disease caused by inhaling harmful chemicals like diacetyl, sometimes found in flavored vapes. Tips for Parents & Caregivers: Talk Canadian teen develops 'popcorn lung' like vaping illness, unlike U.S. patients