After opening, I noticed a "rancid" smell. Not for the first time with potato sticks. I guess as they are fried in fat, they turn rancid after a "certain" time
I've noticed the same thing a couple of times with this particular snack item. At first I thought it was just a "canned" smell, but didn't think about the fried/rancid possibility until some time after. Makes sense though!
I remember these things - I think these are produced on the normal civvie market too - not too special but still a nice variation from say pretzels or some similar dry salty carb snack.
I can't imagine many of these being still "fresh" by this point in any of the MRE's they were packed in. So tread carefully - rancid food is never fun.