Re: "If in doubt..." sure, but there's also the whole "Okay, that's two tubes of bulk sausage in a row I've tossed, one with certainty and wisdom, one with a bit of doubt. And I don't want to keep throwing out sausage tube after sausage tube, and have it turn out that, if I sniffed really hard at ordinary, fresh, healthy sausage, maybe I'd detect just a tiny whiff of sulfur. (Or, maybe it's one of the spices is nearly-sulfury smelling, and my nose is confused.)

I'll check the ingredient list next time; I'm not interested enough to dig through the trash :-).