How to Make Your Home Smell Good All the Time

A house smells good when the air is moving, the drains are sealed, and the soft furnishings are clean. Everything else, candles, diffusers, plug-ins, is decoration on top of those three. If a room still smells after you have dealt with all three, the source is somewhere you have not looked: under the washing machine, inside a shower trap, behind the fridge, or in the back of a wardrobe.

This is worth taking seriously in a warm climate, because heat accelerates everything. A damp towel left in a bathroom at twenty degrees is a minor annoyance. At thirty-two degrees with the windows shut, it is a smell by the evening.

Why does a clean house still smell?

Because cleaning removes visible soil and smells are usually invisible. The most common sources, in rough order of how often we find them:

• The washing machine. Detergent residue, fabric softener and lint build a biofilm in the drum and the seal. Run a hot cycle with citric acid or a washing machine cleaner once a month, and leave the door open between washes.
• The shower trap and the overflow. Hair and soap scum sit in the trap and rot. A bath overflow that has never been cleaned can smell like a drain even when the drain is fine.
• The kitchen sink overflow and the dishwasher filter. Both collect food.
• The fridge drip tray, at the back, underneath. Rarely cleaned, always capable of smelling.
• Soft furnishings. Sofas, cushions, curtains, rugs, mattresses. Fabric holds odour the way a sponge holds water, and no amount of room spray touches it.
• Damp. A patch on a wall behind a wardrobe, a leaking pipe under a sink, a bathroom with no extraction. Damp smells like damp no matter what you put in front of it.

Finding the source in twenty minutes

Do not trust your nose in the room you are used to. Three practical tests:

• Leave the house for twenty minutes, then walk in through the front door. Your nose resets outside. Whatever you notice in the first three seconds is the real smell, and it will tell you which part of the house it is coming from.
• Sniff at the source, not the room. Open the washing machine door and smell inside the drum. Pull the fridge out and smell behind it. Lift the corner of a sofa cushion. Put your nose near the shower drain.
• Use a friend. Genuinely. You cannot smell your own house. A visitor will tell you in one sentence what a month of guessing will not.

What actually removes odour?

Odour molecules have to be either removed or chemically changed. Masking them with a stronger smell is a temporary fix that usually makes things worse, because fragrance plus stale air equals a heavier, sweeter staleness.

Things that work:

• Ventilation. The single most effective method, and free. Ten minutes with opposite windows open creates a cross draught. In summer, before 09:00 or after 21:00.
• Washing the thing that smells. Curtains, cushion covers, throws, dog beds, the mattress protector. Machine washable is a design feature worth looking for.
• Bicarbonate of soda on fabric. Sprinkle on a mattress or a rug, leave an hour, vacuum. It absorbs some odour and it is safe on most fibres.
• Vinegar in the wash for towels and gym kit. Half a cup in the rinse compartment instead of softener. The vinegar smell rinses out.
• Sunlight and fresh air for pillows, duvets and rugs. Two hours outside does more than an hour of anything else. In this climate, do it early, and be aware that strong sun will fade a coloured rug.
• An open box of bicarbonate in the fridge, replaced monthly. Cheap and it works.
• Enzyme cleaners for pet accidents and vomit. They break down the protein rather than covering it, and they are the only thing that works on a soaked mattress or a car seat.

What about candles, diffusers and plug-ins?

They are fine as a finish, and useless as a fix. A scented candle in a room with a damp patch produces a smell that is worse than either ingredient on its own. If you like them, use them after the air is clean, and not as a substitute for cleaning it.

Two practical cautions. First, most plug-in air fresheners contain fragrance mixes and volatile solvents, and in a closed, air-conditioned room those accumulate. Some people get headaches from them and blame the cleaning products. Second, reed diffusers knock over. On a marble floor or a wooden table, an oil spill is a permanent mark.

If you want a scent in the house, the better versions are things that smell of themselves: a bowl of lemons, fresh herbs on a windowsill (basil survives a kitchen here, rosemary survives everything), or a couple of drops of essential oil on a cotton pad inside a wardrobe. All of them are subtle, which is the point.

Keeping the bathroom from smelling

Bathrooms here have two specific problems. Many have no window, so the only extraction is a fan, and fans get clogged with dust and stop pulling air. And the water is hard, so soap scum builds on every surface, and soap scum holds bacteria.

The routine that works:

• Squeegee the shower screen after every use. Thirty seconds, and it removes most of what would otherwise become scum.
• Leave the bathroom door open for twenty minutes after a shower, fan on. If the fan is noisy or weak, clean the grille with a vacuum brush.
• Once a week, pour a kettle of hot water down the shower drain, then a spoonful of bicarbonate and a cup of white vinegar. Let it fizz for ten minutes and flush with hot water. Do not use this on a marble shower tray: use an enzyme drain treatment instead.
• Descale the shower head every two months by unscrewing it and soaking it in citric acid solution for an hour. A scaled head sprays unevenly and leaves water standing, which is what starts the smell in the first place.
• Wash the bath mat weekly at 60 degrees. Not fortnightly.

Damp and the closed-up summer house

This is the big one on the Costa del Sol, and it catches people out because the weather outside is dry. A villa that is shut up for three weeks in a hot month, with the air conditioning off, will come back feeling musty. The moisture has nowhere to go.

Three fixes, in order of cost. Ventilate: even a locked-up property benefits from someone opening windows for twenty minutes twice a week. Dehumidify: a small electric dehumidifier run for a few hours a week in the worst room drops the humidity enough to stop mould forming, and it is cheaper than repainting. Absorb: bowls of bicarbonate or salt in wardrobes, replaced monthly, will not fix a damp wall but they will keep clothes from going musty.

If you have a holiday rental, this is the argument for a mid-stay or weekly check rather than only a changeover clean. A cleaner who opens the windows and runs the dehumidifier is doing more for the smell of the property than any diffuser in the hallway.

What about the kitchen?

Kitchen smells are grease and food waste, and both travel. The extractor filter is the usual culprit: a carbon filter that has never been changed does nothing, and a metal mesh filter that has never been degreased is worse than nothing because it holds old cooking fat. Soak a metal filter in hot water with washing soda for twenty minutes, once a month. Replace carbon ones every three to six months if you cook daily.

The bin is the other one. A bin with a lid, emptied before it is full, rinsed monthly, and lined properly. If the bin lives in a cupboard, leave that cupboard door open for an hour after you take the rubbish out.

The shortest version that works

Open the windows daily. Clean the washing machine monthly. Wash the soft things regularly. Fix the drip. Sniff the drains. That is it. A house that smells of nothing smells clean, and that is a better result than a house that smells of vanilla.

If you have sniffed every drain in the house and the smell is still there, it is usually something we can find in ten minutes. We look after homes and rental properties in Elviria, Calahonda, La Cala de Mijas and the rest of the coast, and a mid-stay check is often all it takes. [email protected], or +34 604 42 21 31.

If you would rather hand it over: a deep clean in Marbella.