Get Bathroom Sink Overflow Drain Odor Background. I do know that this sink drains slowly despite using drain cleaner; Allow to set overnight, then flush the sink the following day with warm water.
Bacteria growing in the overflow drain can cause an unpleasant odor. The overflow opening on a bathroom sink serves two functions: An overflow is an optional feature found in some bathroom sinks.
A smelly bathroom sink drain is a common problem, as odor, residue and bacteria accumulate regularly in the drain.
I do know that this sink drains slowly despite using drain cleaner; Bathroom sink odors can come from a number of places. Not just the kitchen sink, but my bathroom sinks also had a 'sewer odor'. Have bathroom vessel sinks without overflow.