Washing machine odours may be more common than people might think. Sometimes, the cause is simple and can be easily fixed, but other times it could indicate a deeper issue with the appliance that requires professional attention.
James Clarkson, a plumber with 15 years of experience, explained: “The smell usually comes from trapped detergent residue, fabric softener, and lint mixing with warm, damp conditions. This creates the perfect breeding ground for mould and bacteria. Once that builds up behind the drum or in the rubber seal, the machine can quickly start smelling.”
According to the expert from Plumbworld, this problem can be easily solved at home using just some bicarbonate of soda, or baking soda. This £1 solution can break down the cause of the odour while also automatically refreshing the smell inside the machine.
James added: “Baking soda is a natural deodoriser and mild abrasive. When you run it through the machine, it helps break down soap scum and neutralises odours without damaging the drum or pipes. Most households already have a box in the kitchen cupboard, and it costs about a pound.”
To use this handy trick, you’ll need half a cup of baking soda added directly into the washing machine drum where your clothes would usually go. Run the machine without any laundry on a hot wash cycle, ideally at 60°C or higher.
This method should dissolve any deep-set grime in the machine and neutralise any lingering odours. For an added touch of freshness, James suggests adding a splash of white vinegar into the compartment where you’d usually put detergent.
Vinegar will help to break down any limescale build-up in other parts of the machine. According to the expert, this routine can be repeated monthly to keep your machine smelling as fresh as possible.
If this cycle doesn’t eliminate the smell, or if it’s more of a musty odour, it could be coming from the rubber door seal rather than inside the drum. A spokesperson for Plumbworld explained: “When moisture and detergent residue get trapped in the folds of the seal or in the corners of the drawer, mould can grow quickly.”
To tackle this problem, soak a cloth in hot, soapy water or diluted vinegar. Then wipe down the rubber door, ensuring you reach all the flaps and folds, to remove the mould and prevent the musty smell from returning.
To avoid future odours, James recommends incorporating a few additional steps into your regular laundry routine. These include leaving the door slightly ajar after each wash to allow the drum to dry out fully and removing wet laundry as soon as possible to prevent mildew growth.
It’s also wise to steer clear of using excessive detergent, as this can cause additional residue and accumulation in your machine and typically doesn’t result in cleaner garments to begin with. Regularly clearing out the filter at the base of the appliance can also be beneficial.
James explained: “These small habits make a huge difference. Most people don’t realise their washing machine needs cleaning, but like any other household appliance, it benefits from regular care.”
Plumbworld experts added: “Regular upkeep doesn’t just stop the smells — it also helps your washing machine perform better and last longer. Prevention is always cheaper than repair.”