Catch of the Day- a few simple ideas

[Birds Nest]

Never heard the lemon thing.

MGM, try using peanut oil. It has a higher smoke point and it doesn't 'hold' odors the way other vegetable oils can.

[bigfishtale]

Simmer some white vinegar(in another pan) after frying fish and should get rid of the smell. Of course you'll have vinegar smell for a brief time

[shresearchdude]

I suppose you could simmer anything to replace the fish odor with? lol...