sewage smell fomr kitchen sink in uae villa?« Back to Previous Page

The most likely cause is a dried-out or compromised P-trap, combined with UAE-specific humidity and AC pressure dynamics. The U-bend of pipe under your sink holds water to block sewer gases; in our climate, rapid evaporation from heat can empty it. When your AC turns on, it creates negative pressure inside the home, which can actively pull the remaining odours from the dry drain into your kitchen.

First, run a steady stream of water down the drain for a minute to refill the P-trap. This often provides immediate, though temporary, relief. If the smell persists or returns quickly, the issue is more serious. The vent stack on your roof could be blocked by sand or debris, preventing gases from escaping outdoors and forcing them back into your home. Alternatively, a crack in the waste pipe behind the wall could be leaking.

For a persistent smell, you need a professional assessment. Do not use chemical drain cleaners, as they can damage older pipes and won't fix a dry trap or cracked pipe. Call a licensed plumber who can perform a camera inspection to diagnose cracks or blockages in the waste line. If the problem is linked to your AC system's pressure, an HVAC technician may also be needed to assess your home's air balance. A proper fix requires identifying the exact point of failure, which is not always directly at the sink.