functioning normally, the trap should retain its water seal. If a sink repeatedly develops a sewer smell even after running water, the cause may be a leak in the trap, a venting issue, or another plumbing problem.
Step 4: Decide whether to cover the drain
If you want an extra barrier against dust or insects, use a clean, properly fitting drain cover or stopper.
Make sure the cover is appropriate for the sink and doesn’t interfere with any required drainage or overflow features.
There’s no need to cover every sink
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