rancid odor from oily coating

I like to snack on golden raisins, but my local groceries no longer carry the tried and true brands. These raisins were of good size but were no fun at all to eat because they have been coated in an oily substance that has a disagreeable rancid smell. I also developed painful indigestion. The ingredient list (raisins, sulfites) is clearly omitting the substance the raisin have been sprayed or otherwise coated with. I would only recommend them for baking or recipes where the odor is masked.

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