Researchers at the University of Toronto's Quality of Life Research Unit define quality of life as The degree to which a person enjoys the important possibilities of his or her life (UofT).
The shelf life of cold-smoked salmon is very short, one to two weeks in the refrigerator and about one month in the freezer. Storage time is another critical factor in the proliferation of Listeria bacteria since it can grow at low temperatures.
I would have to turn it down. The extension service also says in the canning publication, that if your jars of smoked salmon dont seal, you can only keep them in the fridge for 3to 4 days before youve got bacteria. If someone offered to give away any fish, regardless of age, I would turn it down. Gift fish = bad fish.