If you're looking for something smelly enough for training, I would use the fishy fudge recipe that I also posted. Otherwise, they sort of smell like salmon salad sandwiches when you bake them- it's not a bad smell at all and the addition of parsley mellows them out a bit. We give one to Helix before bed- the recipe made about 2 dozen dog bones (about 2" X 1") so I think they'll last over a month for us, but I would guess you could keep them in the freezer in a ziploc bag for maybe 6 months.
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