There is nothing quite as frustrating as pulling freshly washed clothes out of the washing machine only to discover that they don’t smell fresh.
Sometimes the laundry smells slightly musty. Other times, there may be a sour or damp odor that seems to cling to towels, workout clothes, or synthetic fabrics.
You may wash the same load again, add more detergent, or use fabric softener—only to find that the smell eventually returns.
The problem may not always be your detergent.
A washing machine can gradually accumulate detergent residue, fabric softener, body oils, dirt, and moisture. These residues can remain around the drum, door seal, detergent drawer, and other hidden areas. When the machine stays damp between cycles, unpleasant odors can become more noticeable.
One simple household ingredient that may help with this problem is baking soda.
Adding a measured amount of baking soda during an appropriate cleaning cycle can help neutralize odors and loosen some residues. It isn’t a substitute for properly cleaning the washing machine, but it can be a useful part of a simple maintenance routine.
Here’s how to use it safely and what you should know before trying this trick.
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Why Does a Washing Machine Start Smelling?
Before discussing baking soda, it’s worth understanding where washing-machine odors come from.
Your washer handles dirty clothing, body oils, sweat, food particles, dust, and other residues every day.
Even though the machine uses detergent and water, not everything necessarily gets completely removed.
Over time, residue can accumulate in areas such as:
- The rubber door gasket
- The detergent dispenser
- The fabric-softener compartment
- The inside of the drum
- Drain areas
- Filters
- Hoses
- Other damp, poorly ventilated areas
The situation can become worse when the washing machine remains closed immediately after a cycle.
A warm, damp environment provides favorable conditions for microorganisms and can allow unpleasant odors to develop.
That’s why a washing machine can sometimes smell bad even though it is constantly being exposed to soap and water.
Why Baking Soda May Help
Baking soda, chemically known as sodium bicarbonate, is a mildly alkaline household ingredient.
One of its most familiar household uses is helping neutralize unpleasant odors.
When used appropriately in laundry, baking soda can also help loosen certain residues and make water slightly more alkaline.
This can be useful when your main problem is musty or stale-smelling laundry.
However, it’s important to keep expectations realistic.
Baking soda isn’t a powerful disinfectant, and it won’t magically remove every type of buildup inside a washing machine.
If your washer has substantial mold-like growth, a clogged filter, heavy detergent residue, or a mechanical drainage problem, a more thorough cleaning may be necessary.
