Have you tried those "preventive" products--the ones teachers and FA's use? My husband never uses them, but I see them sold everywhere. I wonder if they would help at all?
PS--Glad I don't work in your office or anywhere near your wastebasket!!
Do you have kids? If not, that could be the reason--darling little creatures bring all kinds of crap home--parents get immune to all that stuff?
PSS--where did you go? and sorry you got sick.