Organic chemicals that have a high vapor pressure and easilyform vapors at normal temperature and pressure. The term is generally applied to organic solvents, certain paint additives, aerosol spray can propellants, fuels (such as gasoline, and kerosene), petroleum distillates, dry cleaning products andmany other industrial and consumer products ranging fromoffice supplies to building materials. VOCs are also naturally emitted by a number of plants and trees.