Secondhand vape exposure detectable in children's saliva, breath Contemporary Pediatrics Scientists Warn Against Breathing in Secondhand Vape 'Smoke' Newsweek Vaping Produces Far Less Second Hand Nicotine Than Smoking Respiratory Therapy 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 E Cigs and Second Hand Vaping: Dangers and Protections