Why does my microwave smell burnt after cleaning?

A burnt smell after cleaning is usually caused by detergent residue, trapped moisture or food deposits that were softened but not fully removed. If the smell is strong, if you see smoke, or if the smell returns every time you heat the microwave, stop using it.

1. Unplug the microwave and let it cool fully before cleaning again.
2. Wipe the cavity, door edge and turntable area with a soft cloth dampened in warm water and a little mild detergent, then wipe again with clean water and dry thoroughly.
3. Check that no cleaner residue, crumbs or splash marks remain around the door seals or on the ceiling of the cavity.
4. Run the microwave empty only if your manual allows a brief test. If you are unsure, place a cup of water inside instead. A smell that quickly fades suggests residue, while a smell that gets worse points to a fault or lingering contamination.
5. If the smell is accompanied by smoke, sparking or discolouration, stop using the microwave.

If the burnt smell does not clear after careful cleaning and ventilation, contact the retailer or store where it was purchased. Do not use harsh abrasives or steam cleaners on the oven, as the manuals prohibit these.