Does cannabis create thirdhand smoke? Thirdhand Smoke Resource Center Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Is Secondhand Vaping Harmful To Your Health? Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN