Paul Saladino, MD on Instagram: "What is this!? 😳 Vaping is horrible for your health, and you should quit it today… While we can’t be entirely sure if this is actually vape residue, it is illustrative of what is happening in your lungs… When you are vaping, you are inhaling several compounds like propylene glycol and vegetable glycerin… Studies show that these can accumulate in your lungs and cause all sorts of problems in humans (PMID:22194587, 31619441, 27108682 )… Wondering if this is better