...contamination from aircraft or vehicle exhausts have affected the airport’s facility to any degree. Both nitrogen oxide and carbon monoxide levels are well below the respective workplace exposure limits. These findings demonstrate that London City Airport...
http://www.londoncityairport.com/AboutUs/ViewRelease.aspx?id=1149
Carbon monoxide (CO) is a colorless, odorless and tasteless gas, yet very toxic to humans and animals. It consists of one carbon atom and one oxygen atom, connected by a covalent ...
http://en.wikipedia.org/wiki/Carbon_monoxide
Carbon monoxide (CO) is a colorless, practically odorless, and tasteless gas or liquid. It results from incomplete oxidation of carbon in combustion.
http://www.epa.gov/iaq/co.html