see Volatile Organic Compound
Volatile Organic Compound (VOC):
Any compound that contains carbon and becomes a gas at room temperature. VOC emissions are regulated because they contribute to smog formation. The most common sources of VOC emissions are from storage and use of liquid and gaseous fuels, the storage and use of solvents and the combustion of fuels and can include housekeeping and maintenance products and building and furnishing materials.
In sufficient quantities VOC emissions can cause eye, nose, and throat irritations, headaches, dizziness, visual disorders, memory impairment; some are known animal carcinogens; some are suspected or known human carcinogens.