Thirdhand smoke is the toxic chemical residue left behind after someone smokes or vapes tobacco. Thirdhand smoke sticks to surfaces and objects. Sometimes thirdhand smoke residue can be easy to see or The Arlington City Council has updated its smoking ordinance to ban e cigarettes and vaping devices in all indoor public places and workplaces. Officials said the change closes a loophole in the city's Does Second Hand Smoke Kill? SiOWfa16: Science in Our World: Certainty and Controversy Does Vaping In The House Affect Others Thirdhand Smoke Resource Center Protecting Californians Australia Second hand Smoke What Is It