Washing Machine Smells Bad? Here's Why and How to Fix It

If your washing machine has started giving off a bad smell, or leaving a faint odor on clothes after a wash, the cause is usually not a mechanical fault. It’s leftover detergent residue and moisture building up in spots you don’t normally inspect: the door gasket, the detergent drawer, and the drum wall itself. The good news is the fix is quick and doesn’t need a repair technician.

The quick answer

A bad washing machine smell is almost always caused by detergent and fabric softener residue plus trapped moisture in the door gasket and detergent drawer, made worse by frequent low-temperature washes. The fix starts with wiping the door gasket, cleaning the detergent drawer with a brush, then running a full hot cleaning cycle with vinegar or a dedicated washing machine cleaner about once a month. Leaving the door and drawer open after each wash keeps the smell from coming back.

Key takeaways

• A washing machine operates as a damp, enclosed environment inside the drum and door gasket, which is the ideal condition for mold and bacteria if it isn’t allowed to dry out regularly (washing machine overview from Britannica).
• The door gasket on a front-load machine is the single spot where moisture, hair, and lint collect most, and the most common source of the smell.
• The detergent drawer builds up hardened detergent and fabric softener residue over time, and it’s a common smell source people overlook.
• Frequent low-temperature washes save electricity but don’t clear the buildup, so the machine occasionally needs a hotter cleaning cycle.
• Leaving the door and detergent drawer open after use lets moisture evaporate instead of accumulating, which prevents most odor in the first place.

Why washing machines start smelling in the first place

A washing machine, especially a front-load one, is a damp, closed environment most of the time. Every wash cycle leaves behind a small amount of detergent and fabric softener residue, plus lint and hair, and this gradually builds up in the door gasket, the detergent drawer, and on the drum wall. Frequent low-temperature washes, common for saving electricity, don’t reach a temperature high enough to kill off this buildup, so it turns over time into an environment where mold and bacteria thrive, which is what you’re actually smelling when you open the door or catch a faint odor on clothes after washing.

Cleaning your washing machine step by step

Follow this order to tackle the three main smell sources:

1. The door gasket: gently pull back its folds and wipe the inside with a cloth dampened in warm water and a little soap, since this area traps moisture and lint you can’t see from the outside.
2. The detergent drawer: pull it out fully (most drawers are removable), wash it with warm water and a small brush to clear hardened residue, and clean the empty cavity behind it too.
3. A cleaning cycle for the drum: run the machine empty on the highest available temperature, with two cups of white vinegar or a dedicated washing machine cleaner instead of regular detergent. Use vinegar on its own, because mixing it with bleach or any chlorine-based cleaner releases toxic chlorine gas, and run a plain rinse cycle before you use another cleaner.
4. The drain filter, if your model has one: some models have a small filter below the door, check your model’s manual and clear any trapped hair and lint.
5. Dry everything thoroughly: after cleaning, wipe the door gasket and drawer dry with a cloth before closing the door.

Do and don’t: stopping the smell from coming back

After cleaning: a monthly habit that stops buildup at the source

Once your machine is properly clean, keep it that way with a simple monthly maintenance cycle: run it empty on the highest temperature with a dedicated washing machine cleaner or white vinegar, which prevents the buildup that regular low-temperature washes don’t reach. A heavily used household may need this cycle every three to four weeks rather than a full month. Dedicated drum cleaner tablets or sachets made for washing machines are a practical way to make this monthly cycle easier without measuring out vinegar every time, but they’re not a substitute for the basic habits above, like airing the door and drawer and using the correct detergent dose.

A washing machine designed to resist odor

The Samsung 8kg Ecobubble is a historical reference here: on September 26, 2026 it had individual seller offers but no main offer. Its old card price is not a current quote; compare the exact seller, delivered total and warranty before considering a purchase. When choosing a new washing machine or replacing an old one that’s given you smell trouble, a feature built into the design itself can reduce buildup from the start. See guide to the best washing machine in the UAE.

Check listing details and availability ↗

When to stop and call a technician

• Smoke, a burning smell, or a hot plug or outlet.
• Water leaks from inside the body or near the electrics.
• The breaker trips, or the door stays locked with water inside.

If you notice any of these, stop the cycle, close the water tap if you can reach it safely, unplug the machine if the plug and the floor around it are dry (if they are wet, leave the plug alone and switch off the outlet’s breaker at the panel, if you can reach it without stepping in water), and keep it off until a qualified technician has checked it. After the steps above, if odor, mold, detergent residue, or limescale keeps coming back, water stays in the drum after you clean the drain filter, or you cannot reach the drain filter, ask a technician or the brand’s service agent to check the drain hose and pump.

Bottom line

A bad washing machine smell isn’t a fault, it’s residue and moisture building up in the door gasket, detergent drawer, and drum. Clean the door gasket after every wash or two, clean the drawer weekly, and run a hot cleaning cycle about once a month. Leave the door and drawer open after each use to stop moisture from building up in the first place. If you’re considering a replacement instead of a fix, see our guide to the best washing machine in the UAE or how to choose a washing machine, and browse everything else in this category in our washing machines hub.

Sources

• Britannica, “Washing machine”, overview of the drum and door gasket design in front-load machines and the internal moisture environment: https://www.britannica.com/technology/washing-machine