Solution for Stinky Rawhide?

Since you're not using it and probably won't since it smells so bad, you're not out anything if you try different things. Try soaking it in water with a little mild soap, then dry it thoroughly. Make sure you soak it well, but try not to stretch the wet leather.
Then, you can rub it with saddle soap and wipe it down again.
Maybe you could rub it down with mineral spirits and wipe it well with an old T-shirt to get the fish oil out, then when the mineral spirits dry, rub it with neats-foot oil.

You might try pressing the rough side after you put the mineral spirits on as that is more porous than the outside.
Please let me know if this works through ThriftyFun.
Aunt Sharon from Texas