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De-fish the house
If you have ever fried fish, you will know that it leaves behind a rather unpleasant fishy smell in the house. To help eradicate the smell, take a tablespoon of peanut butter after you have finished frying the fish, drop it in the frying pan and fry it off for a minute or two. The smell of peanut butter in the house is much more enjoyable than stale fish and oil.