My Bathroom Sink Smells Like Rotten Eggs

By | February 11, 2025

My Bathroom Sink Smells Like Rotten Eggs

If your bathroom sink smells like rotten eggs, it's important to find the source of the smell and fix it as soon as possible. The smell is caused by hydrogen sulfide gas, which is a byproduct of the decomposition of organic matter. Hydrogen sulfide gas is toxic, and it can cause health problems such as nausea, vomiting, and dizziness. In high concentrations, hydrogen sulfide gas can be fatal.

There are several potential sources of hydrogen sulfide gas in a bathroom sink, including:

  • Hair and soap scum: Hair and soap scum can build up in the drainpipe, and over time, they can decompose and produce hydrogen sulfide gas.
  • Food waste: Food waste that is disposed of down the drain can also decompose and produce hydrogen sulfide gas.
  • Sewage: If there is a leak in the sewer line, sewage can back up into the bathroom sink and produce hydrogen sulfide gas.

If you think that the smell of rotten eggs in your bathroom sink is coming from one of these sources, there are several things you can do to fix the problem:

  • Clean the drainpipe: Pour a cup of baking soda down the drain, followed by a cup of vinegar. Let the mixture sit for 30 minutes, then flush the drain with hot water.
  • Dispose of food waste properly: Do not dispose of food waste down the drain. Instead, compost it or throw it away in the garbage.
  • Fix the sewer line leak: If you think that the smell of rotten eggs is coming from a sewer line leak, call a plumber to fix the leak.

If you have tried these solutions and the smell of rotten eggs is still present, it is important to contact a professional plumber to investigate the problem. There may be a more serious underlying issue that needs to be fixed.

Here are some additional tips for preventing the smell of rotten eggs in your bathroom sink:

  • Run the water regularly: Running the water regularly helps to flush out the drainpipe and prevent hair and soap scum from building up.
  • Use a drain strainer: A drain strainer can help to catch hair and soap scum before they enter the drainpipe.
  • Pour baking soda down the drain: Baking soda helps to neutralize odors and keep the drainpipe clean.

By following these tips, you can help to prevent the smell of rotten eggs in your bathroom sink and keep your bathroom smelling fresh and clean.


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