When it comes to e-lquid I'm Gen. Jack Ripper from Dr. Strangelove. Nothing but the best refined nicotine base, Glycerine USP and pure distilled water. No artificial flavorings. No studies have been done on the the effect of inhaled flavorings on the respiratory tract (except OSHA type studies for the factories in which they are produced). On the other hand, nobody has studied what happens when you inhale Minute Maid Lemonade.