Why does my sink smell bad?
There are two main reasons why your kitchen drain may smell: A build-up of food and debris in the drainpipe. Anything you put down your sink other than water can stick to the sides of the pipes or sit in the U-bend. And over time, bacteria will cause it to decay and smell.
Why does my sink smell like sewer?
If the P-trap is blocked, or dry, it would cause a sewage smell to emanate from the sink. If the sink is in regular use, you can eliminate evaporation as a cause of the smell, so it is either blocked, or there is a leak preventing the water from getting to the bottom of the trap.
Will bleach get rid of sink smell?
Pour Some Bleach in There: Bleach kills the majority of odor-causing bacteria. If you kill the odor-causing bacteria, you’ll destroy their smell as well. To use bleach to kill odor-causing bacteria, first, fill your sink with hot water. Try Boiling Water: Boiling water, like bleach, kills odor-causing bacteria.