Risk assessment of inhaled diacetyl from electronic cigarette use among teens and adults ScienceDirect What Vapes Have Diacetyl After Flavor Bans in the US? Watchdog Report Gasping for Action Vaping safe. Know what's inside. Protect their future. TalkNowAZ.com Doctors have linked vaping to a rare, incurable lung condition called obliterative bronchiolitis, often referred to as popcorn lung. The disease permanently scars and narrows the lungs' airways, causing lifelong breathing problems.