On January 13, KLM685 was enroute to Mexico City when the flight crew decided to divert to Bermuda because of a foul-smelling odor on board. It turns out this flight was carrying a cargo of live pigs. The flight crew did not declare an emergency or a pan pan but they had to enter a short hold to burn off some fuel before landing. They landed safely a short time later without further incident.
https://www.flightaware.com/live/flight/KLM685/history/20241213/1340Z/EHAM/TXKF