Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN 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 Tobacco Smoke, Vaping, and Asthma AAFA.org Is Secondhand Vape Smoke Bad For Pregnancy? Experts Explain The Risks