How To Unclog Defrost Drain [extra Quality] -

Stagnant water can develop unpleasant smells due to bacterial growth. Step-by-Step Unclogging Instructions

The defrost drain is a small hole at the back of the refrigerator compartment (or bottom of the freezer in some models). Its job is to carry away water from the automatic defrost cycle. When clogged, water pools at the bottom of the fridge or freezer, leading to: how to unclog defrost drain