The Issues of Testing for Secondhand Smoke. Indoor Science Children at risk: Emory study uncovers the hidden dangers of secondhand vape exposure Understanding the Hidden Health Risks of Vaping UL Research Institutes Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Does cannabis create thirdhand smoke? Thirdhand Smoke Resource Center Can you get second hand smoke from a vape