5.2.1. Major air pollutants and their sources Carbon monoxide (CO)

♤ It is a colourless, odourless gas that is produced by the incomplete burning of carbon-based fuels including petrol, diesel, and wood.

♤ It is also produced from the combustion of natural and synthetic products such as cigarettes.

♤ It lowers the amount of oxygen that enters our blood.

♤ It can slow our reflexes and make us confused and sleepy.