It's Not Just Cigarettes: Vape Residue Sticks on Surfaces Too Thirdhand Smoke Resource Center Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN CA DPH Misrepresents Cannabis Smoke & Vape Hazards Using Anti Tobacco Funds CaNorml.org Addressing Secondhand Smoke: Tobacco and Cannabis Smoke in Multi Unit Housing Is Second Hand Vape Smoke Bad For You? Learn How to Avoid its Side Effects