If the lobster in your kitchen smells very fishy, it might have spoiled. It is important to make sure that you know what some of the signs are of spoiled lobster, just so you will know whether or not to still eat it. Those who find that their lobster is a different color than when they brought it home from the supermarket will most likely want to throw it out because it has gone bad.
Lobster is one type of seafood that tends to deteriorate very quickly, so you will need to make sure that you use it shortly after getting it home from the store. Sometimes lobster that has gone bad an also smell like ammonia, so keep that in mind when you are trying to figure out whether or not it is still okay to eat.