Modern sanitary ware is able to ensure a sufficient level of cleanliness and freshness in the kitchen or bathroom. If everything is assembled according to the instructions, used in accordance with operational standards, no problems should arise. But the reality is that sometimes the functioning of the drain is disturbed, as a result of which a characteristic smell may appear. Let’s analyze the recommendations on how to eliminate the smell from the sink in the kitchen. First, let’s find out why it occurs, because this will give the answer to solve the problem. Secondly, we will consider exactly what to do in each situation and what means and tools will remove dirt and odor in the sink.

Why does the kitchen smell like sewage?

Before starting the active phase of getting rid of the smelly sewer aroma, you need to find out the reasons for its appearance.

  • Clogged siphon. This node is the first to encounter food residues, grease and other kitchen waste. And far from all of them can pass through it unhindered further into the sewer. But even those that pass, partially remain on the inner walls of the pipes and directly in the siphon. As a result, it stinks from him, not from the sewer, and everything will return to normal if the siphon is washed or replaced with a new one.
  • The sink is not used . In this case, the siphon is also to blame, but not because it is clogged, but on the contrary – because there is nothing in it, not even water. Full functioning of the siphon is impossible without a certain amount of liquid inside it. The purpose of this liquid is to create a so-called hydraulic seal, which is the only obstacle that prevents the penetration of air and gases from the sewage system.
  • Incorrectly assembled siphon . The installation process is quite simple, and a mistake is possible only due to ignorance and unwillingness to obtain this knowledge, since the manufacturer supplied the product with instructions with pictures. The correctness of the assembly depends on the design of the siphon, and even a small defect leads to the fact that the hydraulic seal is not formed. As a result, the unpleasant smell from the sewage gets into the room without hindrance.
  • Air plug in the riser . The first sign of an air jam in the system is a slow drain of water and accompanying gurgling. In high-rise buildings, it can be solved only by calling a plumber from the ZHEK. If it is a private mansion, the problem is in the home sewage system, which can be clogged at a considerable distance from the sink.
  • Insufficient sealing between the riser and the corrugated pipe . The diameter of the inlet of the riser may not correspond to the outer diameter of the corrugated pipe that comes with the siphon. If you connect these two elements without a sealing rubber or an adapter, the smell will enter the room directly from the main riser.
  • Sagging corrugated pipe . During operation, the corrugation stretches and may sag. As a result, the drain is disturbed: wastewater either stagnates in the sagging area of ​​the pipe, or it flows out completely, leaving no hydraulic barriers.
  • Damage to pipes or siphon . Over time, the plastic on the corrugated pipe becomes less elastic, which contributes to its cracking. As for other pipes or siphons, this can happen to them only as a result of direct destructive influence from the outside.

How to remove the smell from the kitchen sink

How dangerous is the sewage smell

Air from the sewers, entering an apartment or house, in addition to a bad smell, has a negative impact on the health of people who inhale it. It is not for nothing that a person feels aversion to certain aromas, this happens in cases where the substances emitting these odors can cause harm.

In this case, these are substances such as hydrogen sulfide, ammonia, and methane. Ammonia and hydrogen sulfide smell the most, methane has no smell at all, but this does not make it less harmful. If you breathe these gases constantly, the consequences will not be long in coming. First of all, the respiratory and nervous systems are affected. A sense of anxiety, a nervous breakdown or, in rare cases, fainting may occur without any reason.

What to do to detect a malfunction

The easiest way is to ask for help from a plumber. But you will have to wait for some time and his services are not free. In the case of complex breakdowns, you cannot do without a professional, but in many situations you can handle it yourself.

First of all, observe the functioning of the sink. If the water flows as it should, and the intensity of the smell does not decrease, try flushing the drain system with hot water and detergent for plumbing. If there is no positive result, we disassemble and clean the siphon, look at the pipes and, if necessary, clean them too.

A visual inspection of the water drainage units from the sink will help identify cracks on the corrugated pipe or other reasons for the leaky connection of the sewer elements. It is necessary to make sure that the pipes are dry, that there are no cracks and gaps. If such malfunctions are detected, they can be eliminated with sealant, foam, installation of special adapters or rubber seals. Repairable parts will have to be replaced.

How to eliminate unpleasant odor

Having detected a malfunction, you need to immediately begin to eliminate it, this can be done by the methods described below.

Cable for cleaning sewer pipes

If you take an ordinary metal cable and try to clean the pipe with it, there will most likely not be a positive result. For these tasks, there are special ropes that are equipped with some specific modifications. Their length is 3-5 meters (sometimes more). The cable can be equipped with a special brush at the end or a spiral hook. Mandatory, there is a handle with which rotary movements are performed.

To remove a sewer blockage with a cable, you need:

  1. Free access to the riser and pull out the corrugated siphon pipe from it.
  2. Insert the cable into the pipe and push it as deep as possible.
  3. With one hand, we begin to rotate the movable handle of the device, while the other hand holds the outer casing. In the process of cleaning, the cable is screwed into the pipe.
  4. Having performed these manipulations until the cable rests against the blockage, we try to either push it further along the pipe or pull it out with a hook at the end of the cable.
  5. There is a third option – to try to break through the blockage with a cable, and then destroy it as much as possible by successively moving the cable in opposite directions.

After the procedure, the tool should be thoroughly washed, lubricated with machine oil to prevent corrosion, and put away for storage.


This plumbing device should be used if there is confidence that the siphon is clogged and there is no desire to disassemble it. You can remove blockages from the sink with a small plunger. If the assortment is limited to one copy, we use the one that is available.

  1. We install a rubber cap on the drain hole in the sink.
  2. Turn on the hot water and add enough of it to cover the plunger cap.
  3. We close the water and make movements with the plunger, alternating up and down directions, to pump water inside the cap.
  4. After several translational movements, the plunger must be pulled out, as a result of which part of the contents of the siphon will be in the sink.
  5. Turn on hot water and wash off the dirt.

If suddenly the plunger is not at hand and you urgently need to get rid of the clogging in the sink, you can use improvised means, for example, a paper bag from under milk or juice. We cut off the top cover of the package, cover the drain hole in the sink with the cut place and follow the instructions for cleaning with a plunger, starting from point 3.

how to clean a clog in a sink

We disassemble the siphon

Before taking it apart, you need to make sure that it is the reason. To do this, it is enough to pull out the corrugation from the riser, lower it into a bucket and pour it into the washing water. If the water does not flow from the corrugation, disassemble and look at the siphon.

  1. Place the bucket under the siphon so as not to spill the water that may be in it.
  2. We unscrew the lower part, the so-called tank. We inspect, clean, if you do not help, we disassemble further.
  3. We unscrew all the plastic nuts and carefully pull out the pipes. Then you need to remove the blockage, and assemble the siphon back.

After complete disassembly and cleaning, everything should work as it should, if assembled correctly (see the instructions for the siphon).

Cleaning products

You can remove dirt in the sink both with kitchen products and with the help of special tools. Let’s consider the most effective methods:

  • Salt . We take a glass of table salt, pour it into the drain hole of the sink and add half a liter of boiling water. Wait 3 hours, then wash with hot water.
  • Soda and salt. We mix these products in equal quantities and pour them into the sink. We wait for half an hour, then rinse with boiling water and repeat the procedure. If after the second time it smells like sewage, we try other methods.
  • Soda and vinegar . Pour two tablespoons of soda into the siphon through the sink, then pour a glass of vinegar there and cover with a cork or cloth. We wait 10 minutes for the reaction to pass, then rinse with boiling water.
  • Citric acid . Pour the sachet of powder concentrate into the drain hole of the sink and turn on the hot water. As a result, a reaction should occur, similar to the reaction of soda with vinegar.
  • Mole . We buy the powder or liquid in the store and use it according to the instructions. There is an opinion that the powder is more aggressive than the liquid.

In addition to the “mole”, there are also a lot of special tools, the use of which is regulated by the instructions attached to them. You can buy them in supermarkets or household chemicals stores.

Preventive measures

In order to remove the sewage smell from the sink in the kitchen or bathroom as rarely as possible, you need to follow some rules:

  • Do not wash food residues down the sink. This applies even to such trifles as tea leaves or coffee grounds.
  • After washing the dishes, it will not be superfluous to turn on hot water for a while to prevent the remains of fat and food from settling on the walls of the pipes or siphon.
  • Periodically pour sanitary ware cleaners, soda or pour vinegar with hot water into the sink. The frequency of this procedure depends on the intensity of using the sink, but it is not necessary to do it more often than once a week.
  • If the washing machine is expected to be inactive for a long time, then to prevent the appearance of a stench due to the drying out of the hydraulic seal, pour a little machine oil there. In the absence of the latter, any vegetable oil can be used. The oil film will prevent the water in the hydraulic seal from evaporating, which will ensure long-term blocking of access to sewer aromas.
  • The general hygiene of the kitchen and the apartment as a whole prevents the appearance of dirt on the sink and, as a result, gets rid of unpleasant smells, including sewage ones.
  • Put only high-quality siphons, which will not be difficult to disassemble, and for this you do not need to call a qualified plumber.


There are many methods to get rid of the smell from the sink. The main thing is to identify the cause and choose the appropriate way to eliminate it. In most situations, the problem can be solved on your own using the recommendations described above. If all attempts do not bring the desired result or there is simply no desire to dig around in siphons and pipes, leave it to professionals – let people earn.

How to remove the smell from the kitchen sink: top 10 methods