Positive and negative aspects of electronic cigarettes. Download Table Propylene glycol, a component of electronic cigarette liquid, damages epithelial cells in human small airways Respiratory Research Springer Nature Link Do you know what you're vaping? Propylene glycol (PG) and vegetable glycerin (VG) are the main liquids in vapes. When heated, these chemicals turn toxic and aren't safe to breathe. What Is Propylene Glycol, and Is It Safe for Your Health? Propylene Glycol (PG). Is it safe to visit? #propyleneglycolfree #prop TikTok
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