Hmmm ok. I had four of the smaller bags stored and I "thought" I had closed them well but, the smell coming off them was incredibly noticeable. I'm getting a pretty good long term test as they will be sitting until at least early May. Perhaps I have just contaminated the outsides. I will try heat sealing and rechecking the seals to make sure I've zipped them shut properly. I will also give them a quick wipe down with isopropyl 70% and wear gloves while doing so.
I'll do all this in the next couple days and then replace the bags in their hiding spot. I will also spray down, de-odorize, and put an odor bag in their cubby and make sure it doesn't smell before re-hiding them. I'll let the odor stuff do it's job for a day or two before I put the Grove bags back in on their own.
I appreciate you guys answering. Thanks so much
EDIT: I have been lazy and haven't heat sealed them. Just one of those "next weekend" tasks.