How to Remove Mould Smell from Wooden Furniture

Removing a mouldy smell from wooden furniture means dealing with two issues at the same time: the dampness that keeps the problem going, and the odour that has settled into the pores, drawers, gaps and backing panels of the piece. Washing with mild washing-up liquid, well-diluted white vinegar, bicarbonate of soda and thorough drying can be enough in mild cases, but the smell often returns if the wood stays damp or the furniture is still pressed up against a cold wall.

Why does wood absorb a mould smell so easily?

Wood is porous. Even with varnish, wax or paint on the outside, interior drawer surfaces, unfinished backs and corners with little airflow can hold on to moisture, dust and mould spores. That is why cupboards left shut for a long time can start to smell unpleasant before any obvious marks appear.

Health and environmental bodies emphasise that mould control starts with moisture: cleaning helps, but leaks, condensation and poor ventilation must be fixed to prevent fresh growth. With porous materials, mould can get into small cracks, making it harder to remove completely.

Which home solution neutralises odour without damaging the finish?

For wooden furniture, the safest approach is to avoid soaking it. Mix 500 ml of warm water with 1 teaspoon of mild washing-up liquid and 2 tablespoons of white vinegar. This lifts the surface film and reduces odour without being as harsh as stronger products.

• Use a cloth that is only slightly damp, never dripping.
• Try it first on a hidden spot to check the finish.
• Do not use undiluted vinegar on waxed, lacquered or very old wood.
• Dry straight away with a clean cloth and leave the furniture open in a well-ventilated place.

How should you treat drawers, doors and shelves?

Remove clothes, papers and other items before you start. Vacuum or wipe with a dry cloth to clear dust, then clean the inside surfaces with the diluted mix, working with the grain and making sure no liquid is left sitting in corners.

Once everything is dry, place an open container of bicarbonate of soda or activated charcoal inside the furniture for 24 to 72 hours. These absorbers do not “kill” mould, but they can help draw out lingering odour after the surface has been cleaned and the wood is dry.

How many times should you repeat the process?

For a light smell, one careful clean followed by 48 hours of ventilation is often enough. For furniture that has been closed for months, repeat the clean-and-absorb routine up to three times, always allowing full drying between each round.

• Day 1: clean with mild washing-up liquid and diluted vinegar, then dry thoroughly.
• Days 2 and 3: leave bicarbonate of soda or activated charcoal inside with drawers and doors closed.
• Day 4: air out with doors open and indirect exposure to sunlight.
• If the odour remains: repeat the cycle one or two more times.
• If there are deep stains or the wood feels soft: consider restoration or disposing of the piece.

How to seal the wood so the smell does not come back

After the furniture is dry and no longer has a strong odour, you can strengthen protection using wax, a wood-safe oil, varnish, or a sealer that matches the existing finish. This step closes some of the pores, reduces moisture uptake and makes future cleaning easier.

Results last longer when the furniture is kept a few centimetres away from the wall, aired weekly, and not used to store damp clothes. If the smell returns quickly, the cause is likely the room itself: a damp wall, high humidity, limited airflow, or the back of the furniture constantly sitting against condensation.