PSA: Vaping indoors doesnt just vanish into thin air it leaves behind a sticky, oily residue that builds up on windows. If your glass looks hazy no matter how much you clean it, this might be why Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center What Does a Burnt Vape Look Like Inside? Does vaping indoors cause mould and stains on the wall? Cumnock Chronicle