Strong bad smell from inside the dishwasher, especially when opening the door after it has been closed for some time.

Safety first: Wear gloves when cleaning dirty filters and sump.

• Deep clean filters and sump: Remove all filters and scrub with hot soapy water. Clean the sump area thoroughly, removing trapped food.
• Clean door seals: Wipe the door gasket and around the door edges with a mild disinfectant solution.
• Run a hot cleaning cycle: Run the hottest program empty with a dishwasher cleaner or a cup of white vinegar on the top rack.
• Improve ventilation: After cycles, leave the door slightly ajar to allow moisture to escape.

Regularly running high-temperature programs and keeping filters clean will prevent odors from returning.