Hello dear mom. Our child is just over a year old and for most of the …

Hello dear mom. Our child is just over a year old and for most of the time, we've been feeding them Similac Gold in the evening and morning, and sometimes during the day before their nap. Regular food has mostly been met with fussiness. Yesterday, Lya stubbornly began to refuse the bottle and the formula—I opened a second can of the same batch, but it had a very strong fishy smell, and I think it used to taste better. She completely refuses the bottle with screams now. I don't know what to do next, can anyone suggest something if you've encountered something similar?