cigarette infection smoking weakens your immune system and increases your risk for respiratory infections. For free help to quit smoking visit CDC.gov/quit Smoking: Effects, Risks, Diseases, Quitting

Key sources of NO2 pollution include emissions from cars, buses, trucks, off-road equipment and power plants

Can also be used as an offensive term for someone who is unpleasant or impolite

While other HNB devices almost invariably require their heating chambers to be loaded with a particular type of tobacco-filled cartridge, the patented technology of an IUOC gadget allows consumers to simply insert a conventional cigarette stick of their choice

Because these products are designed to look like regular school supplies and do not create the pungent smell that cigarettes do, they are attracting students at alarming rates