Does anyone know what is the additives or preservatives or any chemical that can be added into fish?

Question

The function to add chemicals to fish is to prevent the fish becoming smelly.

Answer 1

If your fish smells fishy, it's not fresh. But thawing it in milk helps if you are talking about frozen fish. You don't want to add a chemical to "prevent the fish becoming smelly". If it gets smelly, throw it out.

Answer 2

sodium choloride.....i mean common salt