What is JUUL? Juul Halts Online Sales of Some Flavored E Cigarettes WSJ Juul2 Flavour Guide New Juul Pods Flavours Reviewed Juul e cigarettes win FDA authorization, sources say Juul news: Vape brand can continue selling its tobacco, menthol flavors of e cigarettes, FDA says ABC7 New York 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.