What Ingredients Are In An E Liquid? This week is National Drug and Alcohol Facts Week, and HCPH's Prevention Coordinator, Paige, has some #NewsYouCanUse about the dangers of vaping. The National Institute on Drug Abuse shares educational information about Propylene glycol, a component of electronic cigarette liquid, damages epithelial cells in human small airways Respiratory Research Springer Nature Link E Cigarettes and Vaping PPAC Central