Why Does Your Kitchen Sink Smell Like Rotten Eggs?

kitchen sink smells like rotten eggs

The most common issue encountered by homeowners is having their water supply and sinks emit an unpleasant smell. Every time they experience this issue, they want to know what the source is and how to solve it.

Sometimes, the kitchen sink smell like rotten eggs which is unbearable. To get rid of the smell, you first need to find out what is causing it.

If you experience such an issue, then you most likely have a problem and you must pay attention to it. In this article, we have included possible reasons for this and how to solve them.

Possible Reasons Why Your Kitchen Sink Smell Like Rotten Eggs

We have found 5 reasons why your kitchen sink smells like rotten eggs

  1. Grease Stuck in Drain
  2. Clogged Plumbing Vent
  3. Drain Hasn’t Been Used in a While
  4. Dirty Garbage Disposal
  5. No Drain Traps

At first, these problems won’t seem to be severe and should not cause immediate concerns.

As we will discuss these reasons in more detail, we will let you know whether you should be worried and need to contact a professional for more help or not.

Don’t want to go through the hassle of doing it on your own?

Not a problem, just click the button below and find a local plumber who can fix the issue –

1. Grease Stuck in Drain

One of the most common reasons why a kitchen sink smells like rotten eggs is – Sulphuric grease stuck in your sink drain. This could happen while cooking; fat or grease might be dumped into the drain by chance, and instead of rinsing down the drain, it can congeal to the sides.

When it begins to decompose, your sink will start to smell like mold.

What to Do?

The best way to avoid getting grease stuck in the sink’s drain is by making sure that you do not pour grease or fat in the sink.

If you have already fallen victim to it then there is a simple solution: first, drop a couple of teaspoons of baking soda into the sink and then add white distilled vinegar.

Quickly pour in hot water.

The mixture of baking soda and vinegar will chip away the grease or fat and the hot water will scrub off everything and sanitize the sink.

2. Clogged Plumbing Vent

Sometimes the reason for your kitchen sink smelling foul is a clogged plumbing vent. If there is any obstruction, water won’t be able to pass through and will lead to the sink smelling like rotten eggs.

What to Do?

The solution to this problem is very simple: all you have to do is check for obstruction and, if there is any, remove it from the plumbing vent.

To prevent future problems, you can add screens to the vents as well.

Don’t want to go through the hassle of doing it on your own?

3. Drain Hasn’t Been Used in a While

All drain lines have a trap in them that prevents sewer gas from coming into your house. It is a U-shaped pipe that contains water.

If you have not used your kitchen sink in a while, the water that remains in the pipe evaporates, resulting in the nasty gas wafting through your house.

What to Do?

To rectify this issue, all you have to do is run the water to refill the trap; this should eliminate the sulfur smell and immediately restore water back in the U-shaped pipe.

4. Dirty Garbage Disposal

Another common reason for your kitchen sink smelling like rotten eggs is the garbage disposal system being dirty.

Sometimes scraps of food and other dirty garbage get stuck in the drain, creating a rotting or moldy smell, which is why it is essential to keep the water turned on over the garbage disposal for about half a minute after it finishes making the grinding sound; this way, you can wash out old pieces of garbage and food scraps.

What to Do?

If your garbage disposal system is already dirty, then consider running some ice cubes through it.

By doing so, you can easily knock off any food and garbage that might be stuck to the blades. Afterward, throw some lemon or orange slices through it for a nice and citrusy smell.

5. No Drain Traps

If you don’t have a drain trap installed or if it’s installed incorrectly, your sink is bound to stink sooner or later.

What to Do?

You can not rectify this issue on your own. You need to call a licensed or professional plumber to replace the drain trap you currently have or install a new one altogether.

Not a problem, just click the button below and find a local plumber who can fix the issue –

How to Prevent Drain Issues in the Future

You need to take a few preventative measures if you want to prevent your sink from emanating a rotten eggs smell.

We have mentioned below a few you can do to keep the drain in your kitchen smelling clean and fresh:

  • Using the two-ingredient method (baking soda and vinegar) is not something you should apply only when you smell something unpleasant.
  • Do this regularly. We suggest that you do this at least once a month to ensure that you keep the walls of your drain clean, fresh, and free of debris.
  • Use a sink drain catcher that has small holes so that only water is allowed to pass through it. Using it will not only keep debris from going down your drain but will also prevent it from getting clogged. All you have to do is clean the catcher regularly.
  • Ensure constant drainage of water to avoid the disposal of dirt, garbage, or food scraps.

Final Words

If your kitchen sink smell like rotten eggs, your first course of action must be to identify what’s causing it. Once you have successfully determined the source, consult the solutions we have provided for each type of issue.

We are sure that you will be able to ensure the cleanliness of your kitchen sink drains yourself; however, if you have no drain traps installed, you must look for a professional’s help. Also, make sure that you do everything to prevent that issue from arising again in the future.

Don’t want to go through the hassle of doing it on your own?

Not a problem, just click the button below and find a local plumber who can fix the issue –