A coworker kept some medical drugs of an intimate nature in the office fridge, which I found during my own fridge clean out and quietly slipped back into the fridge as I'd found them. I probably wouldn't leave intimacy drugs in the office fridge, but who am I to judge? We had an office cleanup on a day he was absent, and one of my colleagues went to town on the fridge. She started to open the plastic bag containing his drugs, gagged at the smell (there was some plastic-y container in there that smelled like chemicals), and tossed the bag without looking inside. Because, really, who keeps expensive medical drugs in a plastic bag from the neighborhood sandwich shop in the office fridge?
There is now a zippered, official-looking pouch in the beer crisper.
I used to work in an office where anything not labelled with initials and a recent date could be thrown out without notice (make room for catering, someone's lunch, whatever). If you wanted to keep your salad dressing or ketchup in there, you just kept changing the date. It was a brilliant system that liberated everyone to toss fuzzy food with impunity.