Note: I can't actually cook, I am just trying to learn to roughly assemble and heat things. Explain things to me like I know nothing.
A few weeks ago I decided to try out cooking some shrimp for myself. I planned to start off simple: cut out the veins, boil, and panfry. So, I bought a few meals' worth of shrimp and froze them. Over the last few weeks I've defrosted the portions and tried cooking them as planned.
Every time I noticed a foul fishy odor in the defrosted shrimp that made me gag. When I cooked it, I learned that it did not go away like the lighter ocean smell of fish. Overseasoning could not make the smell or taste go away. I have noticed this in some cod before, but it wasn't nearly as consistent as this batch of shrimp.
What on earth is that smell? Did the shrimp go bad? If it did, was it bad when I bought it or because I froze it? If not, what should I have done to get rid of that foul odor?