Here's an easy way to remove food splatter and odour from a microwave:
Step 1: Fill microwave-safe bowl with water, and add one tablespoon of white vinegar.
Step 2: Microwave on high for 5 minutes, or until the inside of the microwave is steamy, and then remove the bowl from microwave.
Step 3: Wipe down the microwave with a paper towel or clean cloth.