You'll be fine. That kielbasa is stuffed with preservatives.
Will it kill you? Well, actually, eating ultra processed food is really bad for you, so maybe it will if it's a big part of your diet, but it will be slower ;-)
If it were a big part of my diet, this wouldn't have lingered in my freezer for 3+ years!
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I'm not super concerned with the flavor, as long as it doesn't taste terribly Off. It's going in a recipe with plenty of other things, and cajun spice, so if it's simply a matter of the taste being dull, no problem at all.
It doesn't appear to be freezer burned, and since the package is air-tight, it seems that shouldn't be an issue.
Also, if this is my last post on MMM, thanks for everything, and I hope my heirs don't end up in the inheritance drama thread. Wish me luck!