Popcorn Lung: The Deadly Secret in Your Vape! Did you know that the sweet, tempting flavor in your e liquid could be hiding a chemical called Diacetyl? This chemical, which tastes Myth: E cigarettes help people quit smoking. Truth: E cigarettes are not a proven safe way to quit. In fact, users may become addicted to both traditional and electronic tobacco products. Choose health. Say E cigarette users could be at risk from dangerous 'popcorn lung' disease, Harvard research finds The Independent The Independent Electronic Nicotine Delivery System flavor use over time by age group in the US: A longitudinal analysis Disturbing Trends with E Cigarettes in Schools