Juul news: Vape brand can continue selling its tobacco, menthol flavors of e cigarettes, FDA says ABC7 New York PULSE GEEK BAR 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. FDA reverses order taking Juul vaping products off the market in US, opens door to possible authorization ABC News