I like my kitchen to smell fresh and not full of whatever we had for dinner last night. I hate waking up in the morning to the smell of fresh coffee and last nights tuna surprise. Aside from sprays which I hate easy things you can do to freshen the room.
Fill the sink with hot water and Pine Cleaner (you can use this to wipe up the counters if you like but it really freshens the room.
Boil a cinnamon stick or some cloves.
Spray undiluted vinegar in the air.