Most often caused by mold, mildew, detergent buildup, or drainage issues, a smelly washing machine can be frustrating and unpleasant. To eliminate washing machine odor, run a vinegar-and-baking-soda cycle, wipe down the door seal, clean the filter, and leave the door open between uses to allow moisture to escape.
Most washing machine odors are fixable and preventable. Below, we’ll break down why your washer smells, how to get rid of washing machine odor, and when it’s time to call in a professional.
Is Your Washing Machine Making Clothes Smell?
If your washing machine is making clothes smell musty, sour, or unpleasant, the machine itself is almost certainly the source of the problem. A washer that hasn’t been properly maintained transfers bacteria, mold, and residue buildup directly onto your laundry during the wash cycle. Even freshly washed clothes can come out smelling worse than they went in if the drum, gasket, or filter is overdue for a clean. If you notice your washing machine making clothes smell after every load, it’s a strong signal that it’s time for a thorough clean or a professional inspection.
Common Causes of Washing Machine Smells
Before you can fix the problem, you need to identify it. The type of smell coming from your machine is usually the biggest clue:
- Detergent Buildup – Using too much detergent or the wrong type leaves behind a residue that traps dirt and bacteria over time. High-efficiency (HE) machines are especially prone to this because they use less water per cycle, so excess soap doesn’t fully rinse away.
- Trapped Moisture – Closing the washer door immediately after a cycle is one of the most common habits that leads to odor. Moisture gets locked inside, creating the perfect environment for bacteria and mildew to thrive.
- Dirty Seals – The rubber gasket around a front-loader’s door is a prime hiding spot for grime, hair, and soap scum. If you’ve never cleaned yours, it’s likely contributing to that musty smell.
- Standing Water – Wet laundry left sitting in the drum for hours can quickly turn sour. The longer it sits, the worse the smell on both the clothes and inside the machine.
- Drainage Problems – If water isn’t draining completely after each cycle, it becomes stagnant. This stagnant water is a breeding ground for odor-causing bacteria.
- Mold or Mildew – A persistent musty smell almost always points to mold or mildew growth, particularly inside front-load washers where the airtight door seal traps moisture between uses.
How to Eliminate Washing Machine Odor: Step-by-Step Tips
A thorough cleaning is your starting point for how to rid your washing machine of odors. Here’s what to do:
- Clean the Detergent Dispensers – Remove all detergent and fabric softener drawers. Soak them in a mixture of hot water and white vinegar for 15–20 minutes, then scrub with a small brush to dislodge residue. Rinse thoroughly and dry before reinserting.
- Wipe Down the Door Seal – Using a microfiber cloth soaked in a warm water and vinegar solution, wipe down the entire rubber gasket, including inside the folds. This area harbors more bacteria than almost any other area in the machine. For stubborn mold, use a diluted bleach solution.
- Run a Cleaning Cycle – Add two cups of white vinegar to the detergent dispenser and ¼ cup of baking soda directly into the drum. Run a hot wash cycle with no laundry. The combination fizzes to break down residue and eliminate washing machine odor without harsh chemical leftovers.
- Rinse With Hot Water – Follow up with an additional empty hot cycle to flush out any remaining cleaning solution. Hot water dissolves residue more effectively than cold water and kills lingering bacteria and mold spores.
- Clean the Filter – Many front-load washers have a drain pump filter that collects lint and debris. A clogged filter is a common culprit when the washing machine odor keeps returning. Check your owner’s manual for the filter location and cleaning instructions.
How to Prevent Your Washing Machine From Smelling
Knowing how to make your washing machine smell better long-term comes down to consistent habits. Here’s how to stay ahead of the problem:
- Leave the door open between washes to allow the interior to dry out fully.
- Use the correct amount of detergent and follow the dosing instructions on the label.
- Transfer laundry to the dryer promptly. Don’t leave wet clothes sitting in the drum.
- Run a hot cycle periodically, even if you mainly wash in cold water, to break down oils and residue.
- Wipe down the gasket after each load with a dry towel.
- Run a clean washer cycle once a month using a washing machine cleaner tablet or the vinegar-and-baking soda method.
- Improve laundry room ventilation. Arizona homes can trap heat and humidity, so consider an exhaust fan or dehumidifier if your laundry space lacks airflow.
How to Identify Odor or Drainage Problems That May Require Washer Repair
Sometimes a smelly washer is a sign of a deeper mechanical or plumbing problem. Here’s how to tell the difference:
- Rotten Egg Smell – A sulfur-like odor often points to hydrogen sulfide gas produced by bacteria in the drain or water lines. If the water in your washing machine smells like sulfur or rotten eggs, check your home’s water supply lines and plumbing before assuming the appliance is at fault. If you have a gas dryer, rule out a gas supply line leak first by shutting off the valve and ventilating the room.
- Persistent Sewage Smell – If your washer smells like sewage after cleaning, pull it away from the wall and inspect the drainpipe connection. A clogged or improperly installed drain hose, P-trap, or standpipe can allow sewer gases back into the home. This is a problem that requires a licensed plumber.
- Odor That Returns Within Days of Cleaning – If you’re regularly cleaning your machine but the smell keeps coming back, internal components such as the drain pump, hoses, or drum may be harboring bacteria that DIY cleaning can’t reach. At that point, a professional appliance technician can properly inspect and repair the issue.
Frequently Asked Questions
How Often Should I Clean My Washing Machine to Prevent Odors?
A deep clean, including the drum, dispensers, gasket, and filter, should be done once a month, or approximately every 30 wash cycles. In Arizona, where heat can accelerate bacterial growth, more frequent cleaning may be beneficial, particularly during summer months.
Can Using Too Much Detergent Cause Washing Machine Odor?
Yes. Excess detergent doesn’t fully rinse away, leaving a film inside the drum that traps bacteria and contributes to odor over time. Always follow the manufacturer’s dosing instructions and use HE-rated detergent in high-efficiency machines.
Should I Leave the Washing Machine Door Open Between Loads?
Absolutely. Keeping the washer door and the detergent dispenser drawer slightly ajar after each use allows the interior components to air dry completely, which prevents the damp environment that mold and mildew need to thrive.
Keep Your Machine and Your Laundry Smelling Fresh
A smelly washing machine is rarely a sign of permanent damage. Most odors respond well to regular cleaning, proper detergent use, and giving the machine time to air out between cycles. But if your clothes washer smells like mold even after following every step above, don’t ignore it. Recurring smells often signal a drainage or mechanical issue that’s best handled by a professional.
Start with the steps above, build a monthly maintenance routine, and your washer should stay fresh for years to come. And if the smell just won’t quit, the team at Dynamic Appliance Repair is here to help. Contact us today to schedule your washer repair and get back to fresh, clean laundry.