Secondhand smoke comes from more than just cigarettes. From vapes to cannabis to hookah, secondhand smoke from all products can expose people to harmful chemicals and pollutants. In this blog, Onjewel Smith Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Tobacco Smoke, Vaping, and Asthma AAFA.org Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Does cannabis create thirdhand smoke? Thirdhand Smoke Resource Center Effects of Secondhand Smoke: Dangers, Prevention, and More