How to Get Rid of Old House Smell: Musty, Stale and Lived In

Updated 23 October 2026

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Written by IVNA London

To get rid of old house smell, first work out which kind you have. A musty smell usually means damp, while a stale smell usually means trapped air and old fabric. Fix the cause, air the house every day, and then add a fresh scent to finish. Old house smell almost always comes from moisture, poor airflow or years of smells soaked into soft furnishings and walls. Fragrance on its own only covers it for a while.

You notice it most when you come back from a weekend away. The front door opens, and there it is: that flat, faintly damp smell that seems to live in the walls. The good news is that old house smell always has a cause, and every cause has a fix. We have set them out below in the order that works best.

What is old house smell?

Most people mean one of three smells, and each one has a different cause and a different fix.

What it smells like	Likely cause	Start here
Musty and earthy, like a damp cellar	High humidity, condensation or a hidden leak	Check the humidity and look for damp
Stale and flat, like a room shut up for weeks	Poor airflow in rooms and cupboards	Air the house and open closed spaces
Dusty and lived in, with a trace of old cooking or smoke	Smells soaked into carpets, curtains, soft furniture and walls	Deep clean fabrics and wash the walls

Many older homes have all three, so work through them in that order. Damp comes first because it keeps creating new smell until you stop it.

Could a musty smell mean damp or mould?

A musty smell often means damp air rather than a mould problem. UK government guidance does carry a warning, though: if you can smell mould but cannot see any, it may be growing out of sight, such as behind wallpaper.

Take a musty smell seriously, because the same guidance says damp and mould can harm health. The risk is highest for children, older people and anyone with asthma, allergies or a weak immune system. If someone in your home has breathing problems, deal with the damp before anything else.

Step 1: Measure the humidity

Damp air is the most common cause of a musty home, so start by measuring it. A hygrometer is a small, cheap meter that shows the humidity in a room, and a basic one does the job as well as an expensive one.

Most UK damp specialists aim for 40% to 60% relative humidity indoors. Readings that stay above 60% give mould and musty smells the chance to grow. Check the bedroom first thing in the morning and the kitchen and bathroom straight after use, because those are the dampest times of day.

Step 2: Bring the humidity down

Dry washing outside when you can. A rack of wet clothes puts litres of water into the air. If you have to dry indoors, use one room with the door shut and the window open, or run a dehumidifier.
Use your extractor fans. Run the bathroom fan during every shower and for 15 minutes afterwards, and use the cooker hood every time you cook. To check a fan still pulls air, hold a sheet of toilet paper to the grille. If it falls away, the fan needs cleaning or fixing.
Keep trickle vents open. Many UK windows have a small vent along the top, and it works best left open all year, even in winter.
Wipe condensation away each morning. Water on the glass runs down onto sills and frames, where it soon starts to smell.
Run a dehumidifier in damp rooms. It pulls water from the air into a tank, so pick one sized for the room you need it in.
Keep furniture a few centimetres away from outside walls. Air needs to move behind wardrobes and sofas, or damp builds up in the gap.

Step 3: Look for a hidden leak

If the humidity looks fine but the musty smell stays, look for water where it should not be. These are the places to check:

Under and around windows.
Ceilings below bathrooms and under the roof.
Around toilets, sinks and baths, and under the kitchen sink.
Behind the washing machine and dishwasher.
Walls at floor level, where rising damp shows first.

Look for stains, flaking paint, bubbling wallpaper and black spots. If you find a leak or large patches of mould, call a plumber, roofer or damp surveyor. If you rent, tell your landlord in writing, because fixing damp is their responsibility.

Step 4: Let the house breathe

Air that sits still goes stale. You will know the smell of a house that has stood empty for months, and a home where the windows rarely open slowly starts to smell the same way.

Open windows for 10 minutes a day. Open two on opposite sides of the house so the air flows straight through. In winter, a short, wide opening lets stale air out without losing much heat.
Open up closed spaces. Wardrobes, the cupboard under the stairs, airing cupboards and spare rooms all trap air, so leave their doors open for an hour once a week.
Leave space in cupboards. Air needs room to move around clothes and boxes, or it turns stale between them.

Step 5: Clean what holds old smell

Years of cooking, smoke, pets and people soak into soft things, and they hold on to that lived in smell even when the rest of the house is clean.

Carpets and rugs

In most older homes, the carpets hold more smell than anything else. Vacuum them twice a week and deep clean them once or twice a year. For a quick lift, sprinkle bicarbonate of soda over the carpet, leave it for an hour and then vacuum it up.

Curtains, cushions and throws

Wash anything with a removable cover. Curtains are easy to forget, yet they catch every smell that rises in the room, so hang them outside to air on a dry, breezy day.

Mattresses and sofas

Vacuum both regularly. When you change the sheets, sprinkle bicarbonate of soda over the mattress and vacuum it off before you make the bed.

Walls

Walls absorb smell too, most of all in kitchens and in homes where people have smoked, so wash them once a year. Mix a teaspoon of washing up liquid into a spray bottle of warm water, spray one section at a time, then wipe it with a damp flat mop in long up and down strokes. Work from the bottom up, so any drips run onto clean wall and leave no streaks. If an old smoke smell still lingers, a stain blocking primer under fresh paint will seal it in.

Bins, drains and filters

Empty the bins daily and wash them out once a month. Pour boiling water down sink drains once a week. Clean the filters in your vacuum and cooker hood too, because a dirty filter pushes stale smell straight back into the room.

Step 6: Add a fresh scent last

Once the house is dry and clean, a good home fragrance makes it smell cared for. In an older home, choose fresh, light scents over heavy, sweet ones, which can sit on top of a faint musty note and make a room feel close.

Hallway: this is the first thing guests smell. Our Kew Morning reed diffuser blends mandarin, bergamot and vetiver. It is a fresh citrus scent that suits a hallway.
Kitchen and utility room: a fresh, zesty scent works best, like lemongrass or citrus.
Living room: our Belgravia Linen reed diffuser brings Earl Grey, cucumber and white musk, a clean tea and soft floral scent.

A reed diffuser scents a room all day with no flame and no plug, so it keeps the house smelling fresh between cleans. Older homes are often draughty, so place it away from doors and open windows. If it seems weak, read why you can't smell your reed diffuser.

Scenting a whole older home? Our Home Sets let you mix any scents, with 3 reed diffusers for £159 or 5 for £250.

Quick answers

Why does my old house smell musty?

Usually because of damp. High humidity, condensation or a hidden leak lets mould and mildew grow. Check the humidity with a hygrometer and look for leaks around windows, ceilings and pipes.

How do I make an old house smell new?

Dry it out, air it every day and clean the soft things that hold smell, such as carpets, curtains, cushions and mattresses. Wash the walls once a year, then finish with a fresh, light home fragrance.

Can a musty smell make you ill?

It can. UK government guidance says damp and mould can harm health, and children, older people and people with asthma or allergies are most at risk. If you smell mould and cannot find the source, have it checked.

Will a reed diffuser get rid of a musty smell?

A reed diffuser covers a smell, but only drying the house removes damp. Fix the damp first, then use a reed diffuser to keep the house smelling fresh.

Find your scent

At IVNA London we make reed diffusers and candles in England, in four scents, each named after a corner of London. Each luxury reed diffuser is £58. Every product page lists the rooms the scent suits and where to place it, so you know what you are getting before you order.

Want the whole house covered? Our reed diffuser Home Sets let you mix any scents, with 3 reed diffusers for £159 or 5 for £250. Every scent also comes as a luxury scented candle.

Frequently asked questions

Why does my house smell musty in winter?

Windows stay shut and washing dries indoors, so humidity rises. Open windows for 10 minutes a day, use extractor fans and dry clothes outside or with a dehumidifier.