I never had this happen before. I had pre cooked bacon in the microwave, on a paper towel and cooked it for 135 sec. This is what I do all the time and never smelled like wires burning. It usually smelled good.
a towel can leave that smell
maybe wires burning get it checked micro draw a lot of current if it is an older house the wiring may not be up to the load have someone check it for you
