hi there! I’m really new to owning taxidermy but have bought myself various skulls like muskrat, fox and mink that have all arrived today. The fox came from a different seller and smells awful. Kinda like a slightly chemical urine scent? But I just tried giving it a soak in some soapy water then sprayed it with a body mist just to try and ease the smell but now it just smells like a tropical fart. Not the mention the skull looks completely clean. What can I try as a beginner?