Well here you go, I have found it to work 100% for me. Got to stop it BEFORE it starts.
You lay fresh lettuce, I've used iceberg or green lettuce. Line the bottom of pan you plan to use, then continue with your fish cooking. Somehow someway that fishy smell does not even get started. Try it it will work. Good LUCK. (i HAVE ONLY USED THIS METHOD IN THE OVEN, NOT SURE ABOUT HOW IT WILL DO ON THE STOVE TOP)