clean out your fridge, i mrean really clean it. the stink is probably travelling up from the refridgerator to the freezer. use clorox. then, get some baking soda boxes, and put them in both the fridge and freezer.
or at least, next time, keep the corpse frozen. it inhiibits the development of stinky bacteria and other gross living stuff.
When my fridge smells I throw out the gross food and clean it with some oxy cleaner made my fantastic.