Propylene Glycol In Vapes Vaping It's On The Increase The Effects and Safety of Propylene Glycol & Vegetable Glycerine Pod Salt UK Propylene glycol, a component of electronic cigarette liquid, damages epithelial cells in human small airways Respiratory Research Springer Nature Link Can fruit flavored nicotine vapes be safe despite their appeal to kids? , , The FDA recently granted approval for a company to market mango, blueberry, and menthol flavored vapes, despite concerns