On Tue, 17 Mar 2015 15:24:44 -0700 (PDT),
wrote:

Ten years ago, at our apartment, we had a foul
odor issue, which was determined to be the
freezer's automatic defroster heater. It had
somehow come in contact with the plastic lining
in the freezer and was slowly melting it, pro-
ducing the stink!

Our landlord replaced the fridge on his dime.

Well, taint that special...