Secondhand Vape Plumes Could Form Lung damaging Radicals Secondhand vape exposure detectable in children's saliva, breath Contemporary Pediatrics Parents using e cigs expose kids to dangerous secondhand vapor Futurity Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Secondhand e cigarette vape smoke exposure increased in last 4 years, contain harmful toxins: JAMA Network study ABC7 Chicago