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 Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Parents using e cigs expose kids to dangerous secondhand vapor Futurity Secondhand vape exposure: Risks and side effects Secondhand vape exposure detectable in children's saliva, breath Contemporary Pediatrics