The smell in your sink may be coming from a number of sources, including hydrogen sulfide (H2S), which is commonly found in sewage. Fortunately, the odor can be easily removed. The first step is to test your water to find out the exact cause of the odor. This may be done by pouring boiling water down the plughole. A vinegar solution can also be poured down the drain.

Contact a plumber

If you're unsure as to what is causing the smell, you may want to contact a plumber. A dirty garbage disposal or sewage system is likely the culprit. Even though these two problems are separate, they're both likely to cause the odor in your sink.

Check the P-trap

If the smell is coming from the drain itself, you'll want to check the P-trap. This is the curvy section of the drain line underneath your sink. This part retains a small amount of water to prevent gas fumes from entering your home. However, the water level in the trap can fluctuate due to changes in pressure. If the water level drops too low, a gas smell will be released through the drain.

If you can't get rid of the smell altogether, you should try pouring baking soda down the drain. This mixture should create a foamy solution, which should eliminate the odor. Alternatively, you may also consider boiling water to clear the blockage.

If the smell persists, it might be due to a blockage in the drain. If it's visible, you may be able to remove the blockage yourself. However, if the blockage is hidden, you'll need to call a plumber to fix the problem.

Pour baking soda and vinegar

Another cause of the smell in your brushed stainless steel tapware is a clogged garbage disposal. This is when the drain between the sink and the sewer becomes clogged and emits sewer gas. This can be harmful to your health and can be a sign of a blocked pipe. A simple solution is to pour baking soda and vinegar into the sink drain.

You may also notice a foul odor in your sink if the water is contaminated with grease or oil. A buildup of these substances can cause a rotten egg-like smell to arise. To prevent this, you should always dispose of food scraps into the trash instead of putting them down the sink.