Why Your Dishwasher Might Smell Like Rotten Eggs

there are a variety of reasons why your dishwasher might smell like rotten eggs, from a dirty filter to a gas leak. But the good news is, if your dishwasher smells like rotten eggs, there are simple steps you can take to get the smell out, and prevent it from happening again.

We have all seen the signs that our dishwasher isn’t working as well as it used to, but we just put it off and then our eyes start to water, and we’re getting a headache. This is because the smell of the dishwasher can be quite horrendous. These days, it is not uncommon for a dishwasher to smell like the inside of a toilet bowl.

After years of using the same old dishwasher, you might notice a smell after a cycle that seems to be getting worse. But why is your dishwasher smelling so bad?

Dishwashers are notorious for their odors. One of the worst conditions is the stench of rotten eggs. What causes the unpleasant smell of the dishwasher? What can you do to solve the problem? If you are facing this problem, you have come to the right place. Find out what causes dishwasher odors and what you can do about them. Here’s everything you need to know about a smelly dishwasher and how to fix the problem. There are several causes for dishwasher odor. The trick is to identify the problem and fix it permanently. According to Savvy Sometimes, problems with the drain, drain pipe, thermostat, or lack of high circulation may be some of the causes. If you are not familiar with these details, now is the time to do research and learn to identify the source of the smell.

High Loop

Not all dishwashers have a high barrel. This is the part of the dishwasher drain that forms a high loop and is located under the sink. This is a government requirement for any dishwasher. This is part of the flow. If you don’t have a high circuit or it’s not installed properly, it can cause a rotten egg smell. If you don’t have one, you can install one or add an air gap near the countertop to solve the problem. Make sure the high loop extends at least 18 inches beyond the connection point. This clears the siphon of debris, including old food particles that accumulate and cause an unpleasant odor. According to Absolute Appliance Repair, a drain with a kinked pipe or an air loop that is too low can be a major contributor to the accumulation of food particles that are not removed. If the tube is too low, it will not be able to exert the necessary force to expel all the food particles. A bend in the hose can also contribute to an unpleasant smell from the dishwasher.

Faulty thermostat

If your dishwasher has a high cycle, another possible cause of the problem is a faulty thermostat. The best way to check your thermostat is to see if your dishwasher reaches at least 120 degrees during a heating cycle. You can also check this by putting a little oil on the spoon and seeing if the dishwasher has cleaned the spoon completely. If there is still grease on the spoon at the end of the cycle, the thermostat may need to be replaced. Replacing the thermostat will raise the water temperature and possibly eliminate the buildup of grease and particles that cause the smell, but it will take some time for the problem to disappear.

Deposits in the filter

Another cause of a rotten egg smell in the dishwasher is a dirty filter. Remove the filter and clean it with a detergent known to remove grease deposits. Dawn dish soap is one of the best for this job. After removal, thoroughly wipe the filter with Dawn cleaner. Use a brush and hot water to remove accumulated dirt. The type of detergent you use may contribute to the build-up of dirt around the filter. In this case, you can also change the brand of detergent. A dirty filter can lead to a foul smell of rotten eggs. The dishwasher filter is usually located at the bottom of the machine, next to the wash handles.

Dirty seal in dishwasher

Appliance Houz points out that another possible problem that can cause your dishwasher to smell like rotten eggs is a dirty dishwasher seal. Grease and food particles can also accumulate in this area. When this happens, bacteria can build up and cause the smell of rotten eggs. The dishwasher gasket is located on the inside of the door. This is the material that seals the dishwasher when the door is closed. Examine it carefully and wash it thoroughly with dish soap Dawn to make sure there is no unpleasant accumulation of grease or small food particles. You can also use a baking soda solution to eliminate odor-causing bacteria in the joints.

A dead parasite in the dishwasher

Another possible cause may be a parasite, such as. For example, a mouse or a large insect that got into the dishwasher and died. In case of odor problems, it is advisable to regularly disassemble the dishwasher and inspect it for dead pests. Pests can get into the smallest of places, and it’s worth investigating.

Blocked garbage disposal

A clogged garbage disposal can also cause a rotten egg smell in the dishwasher. The problem occurs when the dishwasher drain hose is connected to the garbage disposal. If food or grease particles have accumulated in the disposal, this causes unpleasant odours when using the dishwasher. The solution to this problem is to clean the trash can. One of the best ways is to put a plug in the sink and fill it halfway with cold water. Add the ice cubes to the water, along with ¼ cup of baking soda and ¾ cup of lemon juice. After you have mixed the solution, simply turn on the disposal and unplug it. Surprisingly, the ice freezes the dirt on the blades to remove it and also helps to sharpen them. Lemon juice helps against grease, and baking soda gives it an extra boost and removes unpleasant odors from your trash. It’s a simple solution with stuff most people have around the house.


The first step in eliminating the rotten egg smell in your dishwasher is to identify the source. We have compiled a list of the most common causes of dishwasher stench for you. One or more of these problems may contribute to odor formation, so it is important to investigate each potential problem area and take appropriate action to correct the problem.No one is immune to the battle of the dishwasher. Some of you may be resigned to using your dishwasher all the time, while others may have already tried solutions to their dishwashing woes. Regardless of your situation, there is a reason why there are a few people stop using their dishwashers every once in a while, and that is that dishwashers release a small amount of chemicals that can cause a musty smell.. Read more about sulfur smell from sink when dishwasher runs and let us know what you think.

Frequently Asked Questions

How do I get rid of the egg smell in my dishwasher?

The egg smell in your dishwasher is caused by the detergent you are using. Switch to a different brand of detergent and see if that helps.

Why does my dishwasher smell like something died?

The smell is most likely from a buildup of soap scum.

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