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Fortunately, bad smells in a sink are not inevitable. Whether they come from clogged or clogged pipes, a smelly trap or even the drainage system itself, there are solutions to avoid these odors. Explanations.

Bad odors in a sink: maintain your pipes

Bad smells exhaled by your sink are most likely from your clogged pipes. To avoid this inconvenience, it is necessary to maintain them regularly.

  • Start with clean your water pipes using, for example, sodium hydroxide crystals with boiling water.
  • The coffee grounds Poured into the pipes effectively removes impurities and bad odors from the sink. Its abrasive qualities explain this beneficial effect on sanitary equipment. However, the coffee grounds poured in large quantities may in turn clog your pipes. It should not be used more than once a week.
  • White vinegar is also recommended to deodorize a smelly sink. Multifunction, white vinegar fight against bad smells, removes microbes, descales and degreases the sink and its pipes.

Directions for use: pour 1/2 glass of white vinegar into the sink and leave for about 15 minutes before rinsing thoroughly.

Persistent bad odors? Clean the siphon of your washbasin

When the smell of the sink is ubiquitous, the siphon is probably the first responsible. You will need to disassemble it to empty it and clean it.


  • install a container under the sink (a basin) to receive the contents of the siphon;
  • carefully unscrew the siphon holding the upper part of the pipe in order not to damage it (also pay attention to the seals);
  • Empty the siphon and clean it before servicing.

Last but not least: check that there are no leaks after the operation. To make sure, just let a small amount of tap water run for about 1 to 2 minutes.

To note: if despite all these tips bad odors persist in your sink, call a professional who may have to set up a cleaning of the evacuation network of your home.

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