note from a guitar makers page:

"4."Words of warning"- A friend gave me two 3-M masks to wear to avoid wood dust and finishing fumes,but I really needed a space suit.Alot of times my eyes were so swollen that I said "Iam flagged!" and put the project aside till I recovered.Remember how I said in building of first guitar that I was allergic to Indian rosewood.That was nothing compared to cocobolo! Cocobolo rosewood dust has the power to potentially kill me! See this site for more about allergic reactions to woods.- TOXIC WOODS SUCH AS COCOBOLO

http://www.city-net.com/albertfp/toxic.htm