Help, super musty room and stuffies. Dustmite allergy, too.

I spend my days in my room with the door closed. My dirty clothes are kept elsewhere, my garbage never has anything smelly, my overhead fan runs all day, and my door is left open if I am not in it. None of this has helped much.

I can't open my windows, I can't wash my sheets more often, and I can't shower more than once every 4 days. I am mild/moderate but I am mostly housebound.

How do you folks deal with the mustiness? Is there some kind of scent absorber out there?

I have 5-7 big stuffed animals that make this worse. Is there any way to de-dust them other than the washer?