Light a candle by the hob - no more cooking smells.

If you put a bowl of white vinegar near the cooker it will absorb all those nasty cooking smells.

Baking soda diluted in warm water wiped over surfaces gets rid of smells.

To get rid of cooking smells after the event I use vanilla essence in a small amount of water in a pan on the hob on a low heat. The water evapourates and leaves a nice vanilla smell. Don't let the pan boil dry though!