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A dishwasher that smells usually has soil sitting in one of two places: the door seal or the filter. Wipe the seal, rinse the filter if your booklet shows one, and run the machine only with the filter assembled. If the smell comes with standing water or a leak, it has moved from care to repair.
Smell the door gasket before you blame the whole tub. A sour film on the seal is yesterday’s rinse water sitting on rubber. A packed filter is soil in mesh. Those two addresses do not share one spray-arm part.
Confirm a user filter exists in the booklet before you hunt. Wipe the door seal with a damp cloth — not oven cleaner.
What does a dishwasher filter do?
The use-and-care manual for one Kenmore dishwasher model describes a filter system with two parts. An assembled inner filter keeps oversized items and fine food particles out of the pump, and a stainless steel filter keeps food from being recirculated onto the dishes. When either one loads up with soil, you get gritty glasses and an odor.
That manual says food left in the filter can cause an odor and could lead to drainage problems, and it asks owners to remove, inspect, and clean the filter system once a month for best performance. Your model may differ, so use the booklet that matches your door sticker.
How do you clear a smell from the door gasket?
Corners of the door and the gasket collect a film that smells like a closed cooler. Wipe it. Leave the door unlatched after a finished cycle if the booklet allows it. Scented dishwasher additives do not replace that wipe. Corners and the lower edge of the seal hold the most film, so run the cloth along the full length rather than only the front.
| What you notice | What it can point to | What you can safely check |
|---|---|---|
| Sour smell when the door opens | Film on the door seal | Wipe the seal and the corners with a damp cloth |
| Gritty glasses, visible soil on the tub floor | Packed filter | Remove and rinse the filter as your booklet describes |
| White film on the tub, especially under the door | Hard water minerals | Use the cleaning method the booklet gives for the tub |
| Smell and standing water after a finished cycle | Drain path, not just the filter | Do one allowed filter rinse, then use the not-draining checklist |
| Drip at the front or kick plate | Leak | Stop using it and book dishwasher repair |
| Smell persists after seal wipe and filter rinse | Something outside owner care | Book dishwasher repair |
On the hard-water side, the manual for one model says white residue on surfaces points to hard water and that the tub film is worth cleaning with a paste of powdered dishwasher detergent on a damp sponge, followed by a normal cycle. It also says to avoid cleansers other than dishwasher detergent, because they foam. A dishwasher cleaner tablet run monthly is the routine it names for residue.
Can a dishwasher smell come from the filter?
Yes, so rinse the user filter if your booklet shows one, and if water still stands in the tub after that, use the not-draining checklist.
- Rinse the user filter if the booklet shows one
- If the booklet never shows a filter, stop looking for one
- A clean filter plus a lake in the tub is the not-draining checklist, not another rinse
How often does the filter need attention?
The same manual ties the schedule to how you use the machine. Light use with no scraping or rinsing before loading lands at about once a month, heavy use with no rinsing at every week, and a household that rinses dishes first can stretch to every six months. Hard water above 15 grains means cleaning at least once a month.
Cleaning is hands-on, so go carefully. The stainless filter can have sharp edges, and the manual says to scrub with a soft brush under running water. It also says to run the dishwasher only when the filter is assembled correctly, so confirm it clicks into place before the next cycle.
Fragrance will not hide a leak
A drip at the kick plate is dishwasher repair. Smell plus standing water is a drain path. Smell plus a dry sump is soil sitting in rubber and mesh. Empty hot cycles will not replace a packed filter, and extra cycles on a wet floor flood the kitchen. Check the sticker on the door or tub edge for the model before you decide which booklet to trust.
Where a smell can come from besides the seal and filter
A smell can also trace to the drain side. The manual for one Kenmore model points to a kinked or clogged drain hose, and to the air gap or disposal if you have them. The drain air gap, where one is installed, sits on the sink or counter and is part of the plumbing rather than the dishwasher. Lifting the cover and cleaning soil from the cap is described as a check for poor draining.
One unrelated habit matters if the house has a hot water system that sat unused for two weeks or more. The manual says hydrogen gas can collect in that system, and to run hot faucets for several minutes before using the dishwasher.
How do I get the smell out of my Kenmore dishwasher?
Wipe the door seal, clean the filter if your booklet shows one, and run the monthly cleaner routine the booklet describes. If the smell returns quickly or standing water is involved, the problem sits beyond surface cleaning.
Is it normal for food particles to collect in the filter?
Yes, that is what the filter is for. The manual for one Kenmore model asks owners to clean it regularly because leftover soil can cause odor and drainage trouble.
Can I run the dishwasher without the filter?
No. The manual says to run it only with the filter assembled correctly, since the filter keeps oversized items and fine particles away from the pump.
Pick the wet address — gasket, filter, or sump — then either wipe and rinse or book dishwasher repair. Bring the door sticker either way.