Abstract Volatile organic compounds are those that are present in the air having the low boiling points and easily evaporated. These are classified into three categories: volatile, semi-volatile and very volatile compounds. They can be collected by the passive and air sampling or grab and integrated sampling. Mostly, they are collected in tedlar bags made up of Teflon or canisters or can be adsorbed on adsorption tubes. These organic compounds are characterized by the GC-MS, MS, thermal conductivity and electron impact ionization techniques. These compounds are very dangerous and cause many diseases in organisms like urine, blood, lung and skin irritation.