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 Vaping and Youth: Unpacking the Hype and Hazards, Part 1 Wellspring Center for Prevention Vaping vs Smoking in Terms of our environment by Jasonholder Medium Vaping habits may be dipping but non smoking advocates urge action