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 How Long Does Vape Smoke Stay in the Air? Residential Smoke Eaters Austin Air Cleaners How Long Vape Smell Lasts: Unveiling the Lingering Essence Ecigator Luzid Mr. Smoke Personal Air Filter Display of 5 Vaping residue can transfer between rooms, new study finds Vaping residue can transfer between rooms, new study finds