Carbon monoxide is different than most pollutants. It can persist in the atmosphere for about a month and can be transported long distances. Carbon monoxide is a pollutant with potential to harm all living things.
Although carbon monoxide is only a weak greenhouse gas, its influence on climate goes beyond its own direct effects. Its presence affects concentrations of other greenhouse gases including methane, tropospheric ozone and carbon dioxide.
Carbon monoxide readily reacts with the hydroxyl radical (OH) forming a much stronger, greenhouse gas--carbon dioxide.
Increased levels of carbon monoxide reduce the amount of oxygen carried by haemoglobin around the body in red blood cells.