Everyone should be aware of air quality issues. What carbon monxide is, how it's measured, and how best to deal with it.
Here is a link to the National Institute for occupational 
Safety and Health (NIOSH) pocket guide to chemical hazards.
http://www.cdc.gov/niosh/npg/npgd0105.html
Here is a link to a comprehensive document produced by The Department of Consumer & Industry Services that provides in depth inormation regarding exposure to carbon monoxide and other chemicals.
http://www.michigan.gov/documents/CIS_WSH_part301_35589_7.pdf