No matter where we are staying, I always bring Febreeze and lysol because you just never know. I found that the condos on the floor level at OKW (and all the resorts for that matter) always seem a bit "mustier" than the others and I just chalk it up to the Florida humidity. I know my basement can get that same smell in the summer here in the north east.
That's the way I feel too. Not our basement, but if I cut off the a/c and leave the windows open at home here in the summer, it gets musty. Ironically my asthma seems better in damp weather, so it doesn't bother me.