Can the bagged shredded roasted squid still be eaten when it is sour?

I can't. In general, squid tastes delicious without any peculiar smell and sour taste. Roasted squid tastes sour, which is caused by food deterioration and can't be eaten any more. Shredded squid is a kind of seafood, which is made from dried squid. It is delicious and rich in trace elements such as iron, calcium and phosphorus, which is beneficial to human bone development and hematopoiesis.