Sitting somewhere when a cloud of cotton candy vapor washes over you? If you can smell the sweet scent of a vape, that's not a great sign. If someone smokes outside, do they bring thirdhand smoke indoors with them? Thirdhand Smoke Resource Center All about vapes what's in them, how do they work, and more Philip Morris International What does the smell of stale tobacco smoke mean? Thirdhand Smoke Resource Center Vapers & Hookah Smokers Exhale Through Nose More Often Than Cigarette Smokers NYU Langone News Vaping: Get the Facts. Protect Your Future Anne Arundel County Health Department