In future, before you even take the fish out if the fridge, pour about a tablespoonful of ordinary vinegar into a saucer and place that on a worktop out of the way. That quite quickly neutralises the smell once the cooking gets under way.
A chemist once explained exactly why this works to me but I've forgotten, I'm afraid. All I know - since we've been having kippers for Friday breakfast for decades - is that it works.