I’ve actually gotten in trouble at work for doing that! Now I just tote them to the cafeteria and dump them in those wastebaskets.
LOL. Back in the days when people didn’t go full HR-complaint for any prank, I can remember a few incidents of sardines being placed in inconspicuous places like filing cabinets or toolboxes.
Sardine oil down the defroster vents of a vehicle is going way too far, though.