How to Get Rid of Rotten Egg Smell in Bathroom Sink

How to Get Rid of Rotten Egg Smell in Bathroom Sink

There’s nothing worse than walking into your bathroom and being hit with a foul, rotten egg smell emanating from your sink. Not only is it unpleasant, but it can also be embarrassing when guests come over. If you’re dealing with this issue, fret not, as there are several effective methods to get rid of the rotten egg smell in your bathroom sink.

1. Clean the drain: The first step is to clean the drain thoroughly. Start by removing any visible debris or hair from the sink drain. Then, pour a cup of baking soda followed by a cup of vinegar down the drain. Let it sit for 15 minutes before flushing it with hot water. This mixture will help eliminate any biological buildup causing the odor.

2. Check the P-trap: The P-trap is a U-shaped pipe located beneath the sink that holds water and prevents sewer gases from entering your home. Sometimes, the rotten egg smell can be caused by a dried-out P-trap. Run water in the sink for a few minutes to replenish the water in the trap and eliminate the odor.

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3. Clean the overflow drain: The overflow drain, located near the top of the sink, can also accumulate debris and bacteria. Use a small brush or a toothbrush to scrub the overflow drain with a mixture of vinegar and water. Rinse it thoroughly afterward.

4. Use bleach: If the rotten egg smell persists, mix a solution of one part bleach and ten parts water. Pour it down the drain and let it sit for about 15 minutes before rinsing it out with hot water. Be cautious when using bleach, as it can be harmful to your skin and eyes. Ensure proper ventilation and use protective gloves.

5. Call a plumber: If none of the above methods work, it’s time to call a professional plumber. They can inspect your plumbing system, identify any hidden issues, and provide a solution to permanently eliminate the rotten egg smell.


1. Why does my bathroom sink smell like rotten eggs?
The rotten egg smell in your bathroom sink is usually caused by the presence of hydrogen sulfide gas, which is produced by bacteria in the drain. It can be due to several factors, including biological buildup, dried-out P-trap, or plumbing issues.

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2. Is the rotten egg smell harmful?
While the smell itself is unpleasant, it is usually not harmful. However, if you experience other symptoms like nausea, dizziness, or difficulty breathing, it’s advisable to seek medical attention as it may indicate a more serious issue.

3. Can I use commercial drain cleaners to get rid of the smell?
Commercial drain cleaners can be effective in removing clogs, but they may not address the underlying cause of the rotten egg smell. It’s better to try natural methods first and only resort to chemical cleaners as a last resort.

4. How often should I clean my bathroom sink drain?
To prevent the buildup of bacteria and foul odors, it’s recommended to clean your bathroom sink drain at least once a month. Regular maintenance can help avoid unpleasant smells and clogs.

5. Can I prevent the rotten egg smell from returning?
Yes, you can prevent the smell from returning by following a few simple steps. Avoid pouring grease or food scraps down the sink, use a drain strainer to catch hair and debris, and periodically flush your drains with hot water and vinegar to keep them clean.

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6. Why does the smell only occur in the bathroom sink?
The bathroom sink is often the most neglected when it comes to cleaning, making it a breeding ground for bacteria and odors. Additionally, the presence of hair and soap scum can contribute to the foul smell.

7. Will air fresheners mask the smell?
Air fresheners may temporarily mask the smell, but they won’t eliminate the underlying cause. It’s best to address the issue directly by cleaning the drain and ensuring proper plumbing maintenance.

In conclusion, a rotten egg smell in your bathroom sink can be unpleasant, but it is not an unsolvable problem. By following the steps mentioned above and maintaining proper hygiene, you can easily eliminate the odor and enjoy a fresh-smelling bathroom once again.

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