About Secondhand Smoke Smoking and Tobacco Use CDC How long does vape smoke stay in the air? Tobacco Smoke, Vaping, and Asthma AAFA.org Does cannabis create thirdhand smoke? Thirdhand Smoke Resource Center Secondhand Vape Exposure: Effects, Who's at Risk, and More Many people believe that vaping is less harmful than smoking, but that's a common misconception. In fact, in addition to nicotine, vapes can contain toxic chemicals that could be linked to cancer,