I work in a dusty enviroment everyday for 27 yr.here's ur best rule of thumb If it ain't fresh air don't breath it.I have seen what effects wood can do to a man.he breaths thru a hole in his throat now.
Ouch! I do a pretty good sneezing fit imitation when I don't put on my mask. A dust collector and and air filtration system are in the budget... Even just drilling out red cedar gets the old sinuses running.