Typically, the nicotine laden pods used with Juul and other vape pens contain about the same amount of nicotine as a pack of cigarettes. And some youths are consuming a pod a day. 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. Juul Suspends Selling Most E Cigarette Flavors in Stores The New York Times When Will Juul Flavors Come Back Juul to Stop Selling Flavored E Cigarette Pods in Stores