Do Weed Vapes Smell? Nectar Medical Vapes Aerosols from u cigarettes are at least as harmful as those from e cigarettes Inside UCR UC Riverside TSI Mini MOUDI Model 135: E Cigarette Aerosol Analysis TSI Incorporated posted on the topic LinkedIn 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.