That’s just because it’s dried out. Keep it wet and there’s gonna be mold and decomposition. The main preservative at play here is salt. Also used to work at McDonald’s. There was a burger inside of a bag that fell behind the safe that looked pretty normal even though when I found it it was like 10 years old. Was still crazy but I wasn’t surprised though for this reason
I have relatives that I shit you not fear this and believe it is 100% real. It’s so extremely fucking stupid