My DH occassionally burns popcorn in the microwave and that horrible
smell lingers for days! I found a way to get rid of that burnt smell in
the microwave online and thought I would share.
Boil
a large glass bowl of water, cinnamon, and 1-2 tsp vanilla extract.
After you brought water mixture to a boil in microwave, let water/spice
mixture cool in there for 15 minutes. Clean inside walls with the
mixture and wipe dry. TADAH--No more burnt smell!!