Do Elf Bars Leave A Smell? Uncover the Truth Clutch Vape Is Second Hand Vape Smoke Harmful Secondhand smoke and secondhand aerosol Aerosols from u cigarettes are at least as harmful as those from e cigarettes Inside UCR UC Riverside Vaping refers to the use of an electronic cigarette, or other vaping device, to breathe in an aerosol, often containing nicotine, flavouring and other chemicals. Unlike cigarette smoking, vaping doesn't burn tobacco. What does the smell of stale tobacco smoke mean? Thirdhand Smoke Resource Center