Just before reheating shrimp, Guantee that it isn’t rancid. The simplest way to tell that cooked shrimp has gone negative is by smelling it. If it's a foul smell, then it is best to discard it without delay. Spoiled shrimp also has an exceptionally slimy texture.shrimps. During the waters of your Persian Gulf (Bushehr and Khuzestan provinces), th