In Scotland From Today It Is Illegal To Smoke Or Vape In A Vehicle Carrying Someone Who Is Under The Age Of 18. That's Because Research Shows Second hand Smoke Is Really Bad 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 Focused on the Facts: Secondhand Marijuana Smoke American Nonsmokers' Rights Foundation no smoke.org Differing Opinions About Second Hand Vape Exposure Vaping Post Secondhand Smoke vs Vape: What the Science Says