You open the washing machine, expecting fresh laundry, but instead, a strong, eggy odor wafts out. Sound familiar? If your washer smells like rotten eggs, you’re not alone—and you’re right to wonder what’s going on.
That unpleasant smell isn’t just annoying; it could be a sign of bacteria buildup or a hidden plumbing issue. In this article, we’ll explain why your washing machine smells like eggs and share straightforward solutions and tips to banish the stink for good.
Related Video
Why Does My Washing Machine Smell Like Eggs?
Opening your washing machine to discover a strong rotten egg odor can be both frustrating and embarrassing. If your laundry room is starting to smell more like sulfur than fresh cotton, you’re not alone! That unpleasant eggy stench is a common problem for many homeowners. But what causes it, and, more importantly, how can you get rid of it for good?
Let’s break down the causes, solutions, and best practices so you can return to fresh, clean laundry (and a pleasant-smelling home).
What Causes a Washing Machine to Smell Like Eggs?
The most recognizable culprit behind that eggy, sulfur-like odor is hydrogen sulfide gas. This is usually produced by bacteria breaking down organic substances somewhere in your machine or plumbing. There are a few common causes:
1. Buildup of Detergent, Fabric Softener, and Dirt
- Leftover soap, softeners, and grime can accumulate inside the drum, around the door seal (especially in front-loaders), or in detergent drawers.
- Over time, this buildup becomes a breeding ground for bacteria and mold.
- These microorganisms can produce gases, including hydrogen sulfide, which smells like rotten eggs.
2. Blocked or Dirty Drainage
- Lint, hair, detergent sludge, or other debris can clog the filter or drain hose.
- Standing water gets trapped, allowing bacteria to flourish.
- That bacteria breaks down the organic matter and emits an eggy odor.
3. Plumbing Problems
- Sometimes, the smell isn’t just in the machine—it’s coming from your drains.
- Dry, dirty, or poorly vented drain pipes can harbor bacteria or allow sewer gases to back up into your washing machine.
4. Using Cold Washes Too Often
- Frequent cold cycles can prevent proper dissolution of detergent and softeners.
- This leads to undissolved residue inside the washing machine, which then supports bacteria and mold.
5. Poor Machine Maintenance
- Neglecting to clean your washing machine means dirt, grease, and soap scum build up.
- Without regular “maintenance washes,” bacteria go unchecked.
Signs That Your Washing Machine Needs Attention
Before tackling the smell, confirm it’s coming from the washing machine, not another source. Here’s what to look for:
- A strong rotten egg or sulfuric odor that worsens after use.
- The smell is strongest when you open the drum or detergent drawer.
- Visible sludge or black/brown residue around the rubber seal or detergent compartments.
- Clothes don’t smell fresh even after a full wash.
- Water pooling at the bottom of the machine or near the filter area.
Step-by-Step: How to Eliminate the Egg Smell
Let’s get your machine smelling clean again! Follow these steps to address both underlying causes and immediate odors.
1. Clean the Washer Drum
- Run an empty hot wash on the longest, hottest cycle. Use a washing machine cleaner or two cups of white vinegar in the detergent drawer.
- Pause the cycle partway through to allow the solution to soak for an hour, then complete the wash.
2. Scrub the Door Seal and Gasket
- Carefully pull back the rubber door seal and check for trapped dirt, hair, or mold.
- Wipe thoroughly with a solution of equal parts water and vinegar, or use a mild bleach solution (wear gloves).
- Dry completely to prevent new growth.
3. Clean the Detergent Drawer
- Remove the drawer (if possible) and soak in warm, soapy water.
- Scrub away any slime or buildup with a toothbrush.
- Rinse and dry before reinserting.
4. Check and Clean the Drain Filter
- Locate the drain filter at the base/front of your washer.
- Place a towel and a shallow pan beneath it to catch any water.
- Unscrew the cap and clear any debris or standing water. Rinse the filter thoroughly.
- Screw it back in tightly.
5. Inspect the Drain Hose
- Check for kinks, clogs, or standing water in the hose behind your washer.
- If you suspect a blockage, disconnect the hose and flush it out with water.
6. Address Plumbing Issues
- Run water down any nearby floor drains to refresh the trap.
- If you notice sewage smells throughout your laundry room or house, you may need a plumber to check for pipe blockages, leaks, or venting issues.
7. Wipe the Machine Exterior
- Clean the exterior to remove dust and any splashes from cleaning solutions.
8. Let the Machine Air Out
- Leave the washer door and detergent drawer open after each use to allow air circulation and prevent mold growth.
Preventing the Egg Smell: Best Practices
Once your washer smells fresh again, keep it that way with these simple habits:
Regular Maintenance
- Run a hot maintenance wash with white vinegar or a washing machine cleaner at least once a month.
- Wipe down door seals, detergent drawers, and the inside of the drum weekly.
Use the Right Amount of Detergent
- Too much detergent or softener causes build-up. Follow manufacturer instructions for your machine and water hardness.
Dry Out the Machine
- Always leave the lid or door ajar after each wash.
- Remove washed items promptly to avoid trapped moisture.
Clean the Filter and Drain
- Check and clean the filter every few weeks, or as recommended by your washer manual.
Alternate Wash Temperatures
- Don’t rely solely on cold washes. Occasionally run warm or hot cycles to help dissolve residue.
Additional Tips for a Fresh Smelling Washing Machine
- Add a small handful of baking soda to the drum once a month to help neutralize odors.
- Avoid overloading the washer—crowded drums prevent proper rinsing.
- If using liquid fabric softener, dilute it first to reduce sticky buildup.
- Consider using high-efficiency (HE) detergent if you have an HE machine.
Challenges and When to Call a Professional
Most eggy washer smells are caused by simple neglect or minor buildup and can be fixed with a deep clean. However, sometimes the cause is larger than normal cleaning routine:
- Persistent odors even after multiple cleanings
- Signs of a plumbing issue (e.g., water backing up, gurgling drains)
- Leaks, mold, or major mechanical problems
In these cases, it’s best to consult a plumbing or appliance repair professional. They can check for hidden clogs, leaks, or worn-out machine parts.
In Summary
A washing machine that smells like eggs is almost always the result of bacteria breaking down residue, trapped water, or grime within your machine or its plumbing. With a bit of elbow grease and regular maintenance, you can eliminate the smell and keep your laundry smelling fresh.
Regular cleaning, proper detergent use, and allowing your machine to dry after use will help prevent those unpleasant odors from returning. Don’t let a smelly washer overwhelm your laundry routine—follow the steps and tips above for easy, effective solutions.
Frequently Asked Questions (FAQs)
1. Why does my washer still smell even after cleaning it?
Sometimes, the smell persists because the drain hose or plumbing outside the machine is the real culprit. Check the drain hose for blockages and run water through nearby drains to refresh them. If the problem continues, consult a professional to inspect your pipes.
2. Can the type of detergent I use cause bad smells?
Yes! Using too much detergent or the wrong type for your washer (such as non-HE detergent in a high-efficiency washer) can cause soap buildup. This buildup traps dirt and bacteria, causing bad odors. Always use the recommended type and amount.
3. Is the egg smell in my washing machine dangerous?
While the smell itself isn’t seriously harmful, it signals the presence of bacteria and mold, which can contribute to poor indoor air quality and even trigger allergies. Address the source as soon as you notice it.
4. How often should I clean my washing machine to prevent smells?
Clean your washer monthly with a hot wash and either vinegar or a washing machine cleaner. Wipe down seals, detergent drawers, and leave the door open to dry after every use for best results.
5. Why do front-loading washers smell more than top-loaders?
Front loaders are more prone to developing smells because their rubber door gaskets trap moisture, leading to bacteria and mold growth. Regularly cleaning the seal and allowing it to dry between uses helps prevent this issue.
Say goodbye to the rotten egg smell and hello to fresh, clean laundry—your washing machine, your clothes, and your nose will thank you!