N95 mask (valved) or P100 respirator should block the dust and inhibit odors. Nitrile gloves should protect your hands without significantly impacting dexterity. Lab goggles or safety glasses to protect the eyes. And of course clothing that's 180° out of phase with your Sunday best.
Raggie:
If you end up going in there to do any work, that's all good advice. I'd go with a half-face respirator (like 3M 6000 series) w/P100 cartridges due to the
amount of particulates (dust, mold spores, etc.) you'll likely encounter. I think I picked mine up at HD or similar store, so they're not hard to find. Mold spores can be harmful, and one can catch hantavirus from rodent waste.
I'll add a bit of a personal experience tip: Because some of the odors might get rather unpleasant, go with P100 filter cartridges which are additionally rated for nuisance 'organic vapors', and perhaps 'acid gas' as well. I use these whenever cleaning out kitty litter boxes, and they not only take care of the dust, but I can't smell a thing. I also use them when using certain nasty household cleaning products, and likewise, I can't even smell them. They're amazing.
The carts I'm currently using (3M60923) are the ones below with both ratings, but I believe my last ones only had the 'organic vapor' rating (3M60921), and as I recall they seemed to be equally effective in the above situations; so if you only find the ones with that rating (like 3M60921), they'll probably work just as well for what you're likely to encounter. You probably won't even be able to smell anything foul while you're in there.
3M 60923
P100 particulate filters; for organic vapors and acid gases; 2 per pack P100 particulate filter NIOSH approved against certain organic vapors and acid gases For use with 3M half and full facepieces - 6000, 7000 & FF-400 series
www.magidglove.com