The (Rotten) tag is missing from items I pick up if they’re in a container.
Jugs of milk, cheeseburgers, etc … if they’re packaged, do not show as rotten until I (U)nload them from the container.
I tried to eat what looked like a perfectly edible cheeseburger and thankfully the popup happened to tell me it was rotten before I ate it. Taking it out of the wrapper showed its rotten status.