The Issues of Testing for Secondhand Smoke. Indoor Science We protect kids from cigarette smokelet's do the same with vaping. Secondhand vape isn't harmless, here is what parents need to know: https: www.undo.org disease secondhand vape Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC