Millions of people are exposed to secondhand smoke every day. People living in multi unit housing are some of the most exposed. The only way to fully protect people from secondhand smoke at Is Secondhand Vaping Something to be Concerned About? How secondhand smoke, thirdhand smoke & vaping affects kids When someone vapes around others they expose them to 'second hand aerosol'. But what happens to that aerosol then? Does it disappear or is it like cigarette smoke and stays around, sticking to Vaping not only affects your own health, it can also harm your loved ones and those around you. Passive (or second hand) vaping can happen when you're vaping in the same room,