R.D.
Hello, M.!
I am not sure how much you can stand, but if you burn incense ALL THE TIME for awhile, the smoke will soon permiate the walls, carpets, etc. and possibly replace the musty smell. I like ARIS brand. I prefer the "fire" smells to "water" ones, but they are nice and likely strong enough. Maybe try having everything cleaned thoroughly (air ducts, shampoo carpets, scrub or repaint walls, refinish cabinets...you get the idea) if you have the means and time.
As far as stinky feet go, I have heard great things about tea. That's right....tea like you drink. Make STRONG tea and soak your feet in it. Something about the tannins in it make the sweat glands dry out or something....a fix this cheap is worth a try!!
Good luck! Please let me know if this helps!
I am editing this because I just got another idea from the web...Try liquid fabric softner and water in a spray bottle and spritz furniture, curtains, etc., you could put fabric softner sheets in the vacuum cleaner bag, or try some kind of liquid essential oil (lime, tea tree, lavendar, or whatever you prefer) on your furnace filter.