Scotty, I know you mostly work on cars, but have you ever repaired an oven? Lately, the oven in my family's kitchen has been giving off a melting plastic like fume throughout the house and just today, it set off the smoke detector. It's a Kenmore electric oven. Any ideas?

yea, my own oven is 45 years old and still works. Check for crap getting on or under the burners and the heating element inside the oven itself.