haha... I left four or five containers full of used prawn and sandshrimp in the back of my pickup for too long. Didn't bother me but had to clean it out once the gas station attendants started complaining
Just scrub it out with river mud or sand. The dirt absorbs the oils. You can do this with your hands as well. Works every time.
It is a good problem to have!!
Ive never minded the stinky bag. I got it at joes it must have something on it as it never smells all that bad. Got that one on a little piece of green yarn and a black and green corkie.