Now that you've digested your calamari (or maybe pork bung) there's a good TAL about it.

https://www.thisamericanlife.org/484/doppelgangers

Apparently it tastes slightly off calimari.

I would assume it's washed of fecal matter, and frying kills anything still living on the surface.

Keep in mind that sausage it traditionally made with the linings of pig intestines. So...