Vacuum produces an unpleasant musty or moldy smell when running

Safety first: Remove the battery. Work in a well-ventilated area and avoid inhaling dust.

• Empty and wash bin: Remove the dust container and wash it thoroughly with mild soap and warm water if allowed by the manual. Rinse and dry completely.
• Clean or replace filters: Remove all filters. If washable, rinse until water runs clear and dry for at least 24 hours. If they smell strongly or are stained, replace them.
• Check for moisture damage: Inspect inside the air path for signs of mold or damp dust. Wipe accessible plastic surfaces with a slightly damp cloth and then dry.
• Avoid wet debris: Do not vacuum liquids or very damp materials with a Bosch cordless vacuum; this promotes mold and can damage the motor.
• Repeat if needed: Persistent odors may require a second thorough cleaning and full filter replacement.