Update on safe stink.
Removed the guns over night (And no there were NO dead critters) and let it air out.
Still had a smell. I think it’s made up of old guns, some not so clean and old ammo pouches that are older than I am (WW2 M1 Grand).
There was no mold and I have several items that remove moisture from the safe. I also put a hygrometer in the safe overnight to see what the humidity was and it stayed under 20%.
Also this is a fire proof safe and air tight.
All the carpet is good and really couldn’t find anything.
Put two drier sheets and it’s gone. And it has that fresh smell.
Thanks for all the input.