Here is a great starting place to do your homework about the different chemicals that are being used.   As you look into the different information you will see the importance of protecting your respiratory system using a positive air respirator. 

Links

NIOSH website  

OSHA website

CCOHS - The Canadian Centre for Occupational Health and Safety

Articles and research information

Preventing Asthma and Death from Diisocyanate Exposure
NIOSH Publication No. 96-111 (1996)
NIOSH Alert: Workers exposed to diisocyanates may develop serious or fatal respiratory disease.

NIOSH Carcinogen List 
A list of chemicals and substance that are known to cause cancer.  Is the chemical that you are working with on this list?

OSHA: Carcinogens (OSHA Web site)
(includes links to substances with OSHA standards which are classified as carcinogens or potential carcinogens by the National Toxicity Program)

Selected Topics - Organic Solvents

Occupational Health Guidelines for Chemical Hazards
This contain a list of 100's of different chemicals.  Files are in PDF format.

Yale doctors investigate link between paints and worker asthma

Information Alert 
Both forms of unreacted isocyanate present a risk to health when they enter the air during paint or primer spraying. 

Other Resources

HVLP Spray Systems
Spray Paint with a HVLP spray system will drastically reduce overspray and save on coating cost.  Visit www.otsm.com.