It’s not outside the realms of possibility that the invention of fermented meats (which includes salami and other similar sausages) arose when humans decided to eat the intestines of hunted beasts, possibly well after they ate the more desirable portions.
Cultures have different definitions of what is the desirable portions. In some native american tribes the most desired cut of the bison was the raw liver with the contents of the gallbladder squirted on top.
There is an interesting series of scenes in the book Shogun where the main character gets some meat and wants to prepare it in the traditional manner by curing it. He hangs the meat outside but people are so disgusted by the stench that they steal it and dispose of it before he can eat it.