Sobering simulation shows what really happens to your body when you inhale smoke from a vape 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 The risks of vape pens' secondhand aerosols DoD to Military Members, Dependents: Steer Clear of Vaping How People who Smoke or Vape Cannabis Transport the Chemical Residue into Clean Spaces Thirdhand Smoke Resource Center THC found in Wisconsin vaping cases that led to illnesses