Researchers in the Netherlands and Canada found that men who were regularly exposed to airborne paint solvents--they studied painters--in the three months before their partners got pregnant were six times more likely to have a kid with a congenital malformation of some kind and were 50-100% more likely to have a kid with low birth weight.
Until more research is done, I guess you shouldn't be painting any nurseries until after you know the kid's on the way.
Solvent exposure linked to birth defects in babies of male painters [eurekalert via robotwisdom]