Carbon monoxide (CO) a colorless and odorless gas, which at high levels can be harmful to humans by impairing the amount of oxygen transported in the bloodstream to critical organs. Although high concentrations of CO are more of a concern indoors, emissions outdoors, particularly in developing countries can be high. New evidence also reveals that long-term exposure to low concentrations is also associated with a wide range of health effects. The main sources of ambient CO include motor vehicle exhaust and machinery that burn fossil fuels.
How can I reduce air pollution?
Whenever possible, leave a car at home and choose to walk, cycle or use public transport!
You can find lots of other tips on how to reduce and minimize your environmental impact on this page: How to minimize my environmental impact and air pollution.