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 isn't just vapor. It's an aerosol filled with nicotine and chemicals that go deep into your lungs and straight into your bloodstream. Many vapes contain: Highly addictive nicotine More Americans Now Use Marijuana Than Smoke Cigarettes, New Study Shows Marijuana Moment Does Vaping Smell? and How to Tell if Someone Is Vaping Ultra Liquid Labs