Well the dead bunny in the closet is still with us.
I took the box that The Ex put on the curb with the remains in it, put it in a garbage bag, tied it off, and put it in the trunk of my car as I backed it out of the garage to go to work. I took it to work to throw in the dumpster. The box was in my car for less than fifteen minutes, and my car still smelled like, you guessed it, something died in it.
After I got all the remains and creepy crawly things out, the smell remained, even after I doused the closet with air freshener and I sprayed everything down with vodka. (it's a theater trick - the vodka evaporates and eliminates the odor)
This morning I took all the clothes and coats from the closet outside, hung them on the table and chairs, sprayed them down with still more vodka, and am hoping the air and sunshine will take care of the remaining odors.
If this doesn't work, I may have to burn them.