How Long Does Vape Smoke Stay in the Air? Expert Insights VapeDeal.com Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Smoke and vapor may disappear but the danger doesn't. That's why it is important to preserve smoke free spaces. Tobacco smoke and vape aerosol cause indoor air pollution increasing risk What you're watching isn't smoke it's particulate matter size 2.5 microns (PM2.5). One vape exhale took indoor air from 2 500 in seconds. That's because vaping creates ultrafine particles Does Vape Smoke Disappear What Happens When You Quit Smoking and Start Vaping? Does Vape Smoke Stay On Clothes Does Vaping Leave a Smell on Clothes?