Allow the oven to cool to about room temperature before deodorizing it.
Pour 3 cups of distilled vinegar and 1 cup of baking soda into a shallow baking pan.
Place the shallow baking pan in the oven and let sit for 48 hours. The chemical reaction between the vinegar and baking soda should eliminate odors.
After 48 hours, remove the pan from the oven, spill the contents carefully in the sink and wash the pan in warm, soapy water.