I was baking a buttermilk pie. I accidentally spilled it as i pushed the oven rack in. The oven caught fire. Now there is a slight smoke smell in the kitchen. I need to get rid of that smell. 
Bicarbonate of soda is the most effective agent for removing odours in my experience.  I've used it to detox a fridge that stank of fish after I accidently left fresh seabass in there before going off on holiday.  Just scrub it in using a scourer and warm water, followed by a thorough rinse. 