If the goo is too salty, probably bacterias can grow enough to eat the cause of the bad smell, in particular https://en.wikipedia.org/wiki/Trimethylamine

From a random google search I got this report https://uvadoc.uva.es/bitstream/handle/10324/18877/TFG-I-468... (mostly in Spanish, with an English abstract). It looks serious and as far as I understand it makes sense. They recommend to add iodine to burn/oxidize the trimethylamine or use bacteria and bubbles or air/oxygen, or a mix or bacteria+algae+light that produces the oxygen inside the mix. It looks like without an active source of oxidizer, the mix will be stinky for years.