Popcorn lung' may have brought teen close to death after vaping for months, doctors say NZ Herald Risk Management Magazine The Looming Long Tail Risk of E Cigarettes Research indicates that certain flavoring chemicals used in e cigarettes can irritate lung tissue and trigger inflammatory responses in laboratory settings. Some compounds, such as diacetyl, have been linked to respiratory damage when The Royal Page Vape Culture Gasping for Action A Watchdog Report Lab tests reveal popular e cigarette liquids contain harmful chemicals Watchdog Report Gasping for Action