28+ Stinky Pipes Under Bathroom Sink
Background. If it was the trap, you'd smell it in the sink, not under the sink. This was the most logical place for us to start as it was the easiest and most affordable fix we could find.
It piles up in the drains and pipes of your bathroom sinks. If you have noticed an earthy stank coming from under your sink, you're probably dealing with mildew. Here are four different ways of eliminating the stink in your sink:
You may not be aware of it, but your sink trap holds water all the time.
A smelly bathroom sink drain is a common problem, as odor, residue and bacteria accumulate regularly in the drain. However, another common source of odors is buildup in the overflow. Boil a pot of hot water, 2 cups should do it. Dead rats dry out and stop stinking eventually.