Troubleshooting Common Washing Machine Odors
Even with regular maintenance, you might occasionally notice a specific smell. Identifying the type of odor can help you pinpoint the problem and find a faster solution.
If it Smells Like Mildew or a Damp Basement
This is the most common complaint and almost always points to mold or mildew growth. This smell is a clear sign that moisture is being trapped somewhere in the machine for too long.
The Fix: The number one suspect is the front-loader door gasket. Perform a targeted deep clean of the gasket as described in our guide, using a vinegar solution and a baking soda paste for any visible mildew. The second suspect is leaving wet clothes in the drum for too long. Make it a rule to transfer clothes to the dryer or the clothesline as soon as the cycle finishes. Finally, redouble your efforts to leave the door and dispenser drawer open between uses to promote drying.
If it Smells Like Sewage or Rotten Eggs
A foul, sewage-like odor is alarming and often points to an issue with the drain system rather than the machine’s internal cleanliness. This smell is often caused by bacteria flourishing in a clog or from sewer gases backing up into your machine.
The Fix: First, check and thoroughly clean your drain pump filter. A smelly clog of old lint and hair in the filter can produce a surprisingly potent rotten-egg smell. If the filter is clean, the issue may be in the machine’s drain hose or your home’s standpipe. Ensure the drain hose isn’t pushed too far down into the standpipe; this can create a siphon effect that prevents the machine from draining completely and allows sewer gas to come back up. The hose should just hook securely over the edge. If the problem persists after these checks, it may be a sign of a partial clog further down the plumbing line, and it might be time to consult a professional plumber.
If it Smells Metallic, Chemical, or Burnt
A strange chemical or metallic smell that wasn’t there before could be related to your water supply or an internal component. A burning smell is more serious and requires immediate action.
The Fix: For a metallic smell, the issue could be a reaction between your detergent and very hard water, or from metal components like zippers on clothing. Try running a cycle with a water-softening agent or a different type of detergent. If you smell something distinctly chemical that isn’t from a cleaner you’ve used, it’s best to consult your manual or a technician. If you ever smell burning plastic or rubber, stop the machine immediately, unplug it, and call a qualified appliance repair technician. Do not attempt to use the machine until it has been professionally inspected.
