No, I don't know what it is. There are several carved moose and bison skulls on a workshop wall, no odors at all.
Could be commercial dry cleaning fluid for all I know.
Their bleaching agent is a very corrosive paste. I've forgotten what they told me it was.
Long ago, the zoology department had a 45 gal barrel dermestid colony.
They just wired the bones together and tossed it in. The bugs would have it buried by the next morning to feed on.
The more they ate, the less it smelled.
See the log rounds in my avatar? They are stacked against one of the wood shop walls where the skulls hang!