Thirdhand Smoke Visualized

Smoking a cigarette generates two kinds of tobacco smoke: mainstream smoke that is inhaled by the smoker and sidestream smoke from the smoldering cigarette. Secondhand smoke is a combination of the sidestream smoke and the mainstream smoke exhaled by smokers. Thirdhand smoke refers to the secondhand smoke gases and particles that stick to and become embedded in materials and objects, like carpet, walls, furniture, blankets, and toys.