Countertop dishwasher smells: start with trapped residue
Start with trapped food and damp areas: the filter, accessible door seals and the tub after a completed cycle. If water is not draining normally, address that separately. A scented cleaner will not correct an obstructed hose or a badly fitted filter.
Match the smell to a moment
| When you notice it | Where to start |
|---|---|
| Opening after several unused days | Check the filter and seals, then review the manual’s idle-storage routine. |
| Immediately after a food-heavy load | Look for food in the accessible filter and approved cleaning areas. |
| Alongside standing wash water | Investigate drainage instead of treating it only as an odor problem. |
| A burning smell, smoke or electrical symptoms | Stop use and seek service; this is not a deodorizing task. |
Those observations help narrow the next step. They do not identify bacteria, prove mold, or diagnose a failed component. If the kitchen sink also smells or drains slowly, inspect that separate source rather than assuming the appliance created it.
Clean the places the manual makes accessible
Let the dishwasher cool and disconnect power before maintenance. Rinse the removable filter as directed, wipe accessible seals with the permitted damp cloth or sponge, and look for visible food left where the manual allows cleaning. Refit the filter securely before any wash.
Danby’s care section recommends a damp sponge around the door seals and describes an empty Normal cycle before extended storage, followed by allowing the interior to dry. COMFEE CDC17 and BCD6W also describe leaving the door slightly open after washing or during extended non-use. Follow your model’s instructions and keep the open door from becoming a trip or access hazard.
Skip the escalating chemical experiment
Do not combine bleach, acids, drain cleaner or multiple cleaning products. A remedy recommended for a different machine may not suit your seals, finishes or operating instructions. If you choose a dishwasher cleaner, confirm that both the appliance manual and cleaner label allow it; we are not recommending a universal product or dose here.
A useful follow-up check
After cleaning, notice whether the smell returns immediately or only after the machine sits unused. Note whether the water drains normally. Send that distinction, the exact model and any error code to support if the smell persists. You do not need to purchase a replacement dishwasher just because the first cleaning attempt was unsuccessful.
Questions that come up next
Should I keep the door closed between washes?
Check the care instructions. The cited manuals describe leaving it slightly open in particular after-wash or storage situations so the interior can dry.
Is a musty smell proof of mold?
No. Odor alone does not identify its cause. Inspect the permitted cleaning areas and seek help for persistent contamination or inaccessible residue.
Your next useful step
Make the filter, seals and storage routine your first check—not a shopping list of scented additives.
Sources and scope
This is research-based guidance, not a hands-on test or an individual repair diagnosis. Match the exact model and current manual; where instructions conflict, ask the manufacturer.
- Danby DDW631SDB manual — printed pages 11–12.
- COMFEE CDC17P2AWW manual — pages 21–23.
- BLACK+DECKER BCD6W support manual — pages 24–25.