i'd start with making sure the drain, surfaces and gasket are fully cleaned with baking soda ( may need to remove parts to fully clean them)
then put a bunch of newspaper in there with charcoal on top for a fewdays (week?)
then wipe down with vanilla.
I've also heard of truck drivers using coffee grounds and also cinnamon to get smells out of their trailers ( worked in a cold storage for many years, still in IT) Fish and chicken rotting are some of the worst smells, imo.
then put a bunch of newspaper in there with charcoal on top for a fewdays (week?)
then wipe down with vanilla.
I've also heard of truck drivers using coffee grounds and also cinnamon to get smells out of their trailers ( worked in a cold storage for many years, still in IT) Fish and chicken rotting are some of the worst smells, imo.