JUUL Lawsuits: E Cigarettes and Health Problems Saunders & Walker PA Adult Vaping What Does A JUUL Really Do To Your Body? Franciscan Health 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. Puff Bar Vapes Replacing JUUL HP Bagpipe E cigarette flavored pods induce inflammation, epithelial barrier dysfunction, and DNA damage in lung epithelial cells and monocytes Scientific Reports