What is carbon monoxide?
Carbon monoxide, commonly referred to as CO, is an invisible, odourless, colourless, toxic gas.
How is it produced?
Carbon monoxide is produced by the incomplete burning of common fuels such as gas, coal, natural gas, propane, heating oil, kerosene and methane, or any other combustible material such as wood, cloth or paper. Fuels burn incompletely when there isn’t an adequate supply of oxygen.

