DYK? Vaping coats lungs with potentially harmful chemicals. This can include chemicals such as: Diacetyl: This food additive, used to deepen e cigarette flavors, is known to damage small passageways in the lungs. F.D.A. Orders Juul to Remove E Cigarette Products from U.S. Market The New York Times Juul, the vape device teens are getting hooked on, explained Vox Is JUUL coming back? How the FDA's Reversal Sparks Hope and Controversy in the Vaping World VapeLoft FDA rescinds ban on Juul e cigarettes