What's the Difference Between E Cigarettes and Vapes? Grow Strong KC Vape Juice Ingredients: What's Inside Your E Liquid? VITAE Glass Vaping: The Facts Health Improvement Commission Propylene Glycol In Vapes Vaping propylene glycol and vegetable glycerine may lead to lung inflammation Flavor induced inflammation and cytotoxicity in human aortic smooth muscle cells: Potential implications for E cigarette safety ScienceDirect Frontiers The Chemical Complexity of e Cigarette Aerosols Compared With the Smoke From a Tobacco Burning Cigarette