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Why Is My Washing Machine Area Always Smelling Musty?

Last updated October 26, 2026

The short answer

Find the Moisture Source

Start by checking the obvious places. Look behind and under the machine for puddles, damp spots, or rust on the floor. Pull the machine out carefully, if you can, and inspect the water supply hoses and the drain hose for cracks or loose connections. A slow drip may not be visible right away, so feel the floor and the base of the machine with your hand.

Also check the rubber gasket around the door if your washer is front-loading. That seal often traps water and soap scum, which can turn musty. If you find any wet areas, dry them with towels and a fan. If the leak is from a hose or fitting, you may need a plumber to replace the parts. The pros can also help if the leak has soaked into the wall or floor.

Dry Out the Area Thoroughly

Once you stop the leak, the next step is drying everything completely. Wet drywall, wood framing, and flooring can stay damp for days if left alone. Use a wet-dry vacuum to pull water from carpet or padding, then run fans and a dehumidifier to speed up drying. Open windows if the weather allows.

  • Use a wet-dry vacuum for standing water
  • Run fans and a dehumidifier for several days
  • Check behind the machine and under it again
  • Look for discoloration or soft spots on walls and floor
  • Consider removing baseboards if they stay wet

Clean Mold and Mildew

Mold and mildew can grow quickly in a damp area, and they are often the cause of that musty smell. If you see visible mold on the floor, walls, or the machine itself, clean it with a solution of water and mild detergent or a commercial mold cleaner. Wear gloves and a mask to avoid breathing in spores. For porous surfaces like drywall or wood, mold can penetrate deep, so cleaning may not be enough.

If the mold covers a large area or you smell it but cannot see the source, call a mold professional. They can test the air and find hidden growth. The pros who handle water damage cleanup also deal with mold as part of the drying and sanitizing process. Do not ignore it, as mold can cause health issues. See a doctor if you feel unwell.

  • Wear gloves and a mask when cleaning mold
  • Scrub hard surfaces with a mold cleaner
  • Discard porous materials that stay moldy
  • Run an empty wash cycle with hot water and vinegar
  • Keep the machine door open between uses

Prevent Future Musty Smells

After you fix the leak and clean up, take steps to keep the area dry. Leave the washing machine door open after each load so the inside can dry out. Wipe down the rubber gasket with a dry cloth. Check the hoses every few months for cracks or bulges, and replace them if they look worn. If your machine sits on a carpeted floor, consider a plastic tray underneath to catch drips.

In a humid climate, moisture can linger longer. Run a dehumidifier in the laundry room if the air feels damp. Also clean the lint filter and the detergent drawer regularly, as soap residue can hold moisture. If you have a leak that keeps coming back, a plumber can inspect the connections. Keeping the area dry is the right way to stop musty odors.

When to Call the Pros

You can handle a small leak and surface mold on your own, but some situations need professional help. If water has soaked into drywall, carpet padding, or the subfloor, the damage may be deeper than you can see. A water damage inspection can find hidden moisture using tools like moisture meters. The pros can also remove water-damaged flooring and drywall, then dry the area with industrial equipment.

If you notice the smell after a flood or a major leak, do not wait. Water damage spreads, and mold can grow within a day or two. Call local water damage pros to assess the situation. They can also handle cleanup after a burst pipe or a washing machine overflow. For washing machine leaks specifically, the pros can remove affected materials and dry the space thoroughly. Act quickly to prevent more damage.

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Frequently asked questions

Why does my washing machine smell even after I clean it?

The smell may come from water trapped in the rubber gasket, the detergent drawer, or the drain hose. Clean those parts with a vinegar solution, and leave the door open to let the inside dry. If the odor persists, there may be a hidden leak soaking into the floor.

Can a washing machine leak cause damage to my floor?

Yes, a slow leak can seep into wood floors, laminate, or carpet padding, causing swelling and warping. Over time, the moisture can lead to mold. If you notice a musty smell, check for water under the machine and act quickly to dry the area.

Is it safe to use my washing machine if it leaks?

If you see a visible leak, turn off the water supply and stop using the machine until the problem is fixed. A leak can damage your home and create a safety hazard. Have a plumber inspect the hoses and connections before you use it again.

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