What causes vacuum smells
Vacuum cleaners can start to smell bad or burnt for several reasons. Whether you're using a barrel vacuum, upright model or robot, strong smells often mean something clogged or damaged. Acting quickly can prevent worse damage and stop bad odours from spreading through your home.
Common causes of bad vacuum smells
Clogged filters
If dust and dirt block the filters, it can cause musty smells or even a sour odour. Dirty filters are a breeding ground for bacteria and mould.
Overheated motors
If the vacuum smells like burning, it could be the motor. This may happen when something is blocking the suction, forcing the motor to overwork and heat up a lot quicker.
Pet hair and debris
Pet fur, food bits or fluff trapped in the brush roll or hose can start to rot and smell bad, especially if they're damp or stuck deep inside.
Full dust bin or bag
When the bin or bag is too full, bacteria grows in the built up dust and organic waste. This can make the vacuum smell terrible, even if it's a robot model with auto emptying.
How to get rid of bad vacuum smells
Empty the bin or replace dust bag
Always empty the vacuum after use, especially if cleaning high traffic areas. This prevents dirt build up and keeps air flowing properly.
Clean or replace filters
Dirty filters block airflow and trap smells. Rinse washable ones with water or replace them if they're too worn out. Always dry them before reinserting.
Check the brushes
Remove tangled hair or fibres from brush rolls. If the vacuum smells like burnt hair, this is often the cause.
Clean the mop pad
If using a vacuum mop combo, wash the mop pad regularly. Machine wash if allowed or soak it in a mild disinfecting solution and dry fully.
Inspect for motor damage
If smells continue after cleaning, the motor might be faulty. Stop using the vacuum and book a service if needed.
