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 E cigarettes cause lung condition known as EVALI : Revista Pesquisa Fapesp Does vaping cause lung cancer? UT MD Anderson A Warm, Buttery Flavor and a Risk of Irreversible Lung Damage Canadian doctors discover new lung injury related to vaping Popcorn lung: What is it, and who is at risk? Harvard Health