Secondhand marijuana smoke: Side effects and risks Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Secondhand Smoke from Meth: Can You Get a Contact High? Zinnia Health Secondhand marijuana smoke: What are the risks to your health? UCLA Health Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Juul study shows secondhand vaping emissions are less toxic than cigarette smoke