The first time you unlock a newly renovated flat, the sharp smell can feel like proof that everything is fresh and new. But when that smell lingers in bedrooms, wardrobes and a future nursery, it deserves more than an air freshener. The best ways to reduce renovation odours combine proper cleaning, ventilation and treatment for the chemicals that may be causing the smell in the first place.
For Singapore households, this is especially relevant before move-in. Closed windows during rain, high humidity, new built-in carpentry and newly delivered furniture can all make odours more noticeable. A home may look ready after handover while fine renovation dust and chemical emissions are still present indoors.
Start by identifying what is creating the smell
Not every renovation odour has the same source, so not every solution works equally well. A dusty, chalky smell may come from sanding residue, grout, cement work or debris trapped in corners and air-conditioning vents. A paint-like or sweet chemical smell is more likely to be linked to fresh paint, adhesives, sealants, laminate, vinyl flooring, cabinets or new furniture.
Many of these materials can release volatile organic compounds, commonly called VOCs. Formaldehyde is one VOC that homeowners often worry about because it can be emitted from engineered wood, laminates, glues and certain furnishings. The smell may fade before emissions have fully stopped, which is why fragrance alone is not a reliable sign that indoor air is ready for a baby, elderly family member or pet.
If the odour is damp, musty or strongest around a particular wall, ceiling or cabinet, pause before assuming it is normal renovation smell. It could point to trapped moisture, a plumbing leak or mould growth. Those causes need rectification rather than scent masking.
Remove renovation dust before trying to freshen the air
Post-renovation cleaning is one of the best ways to reduce renovation odours because dust holds onto smells and spreads when disturbed. A quick sweep is rarely enough. Fine particles settle inside drawers, tracks, hinges, light fittings, ledges and behind appliances, then become airborne again as people move through the home.
Clean from high to low, beginning with ceilings, fittings and cabinet interiors before floors. Wipe hard surfaces with suitable products and use a vacuum with effective filtration rather than simply pushing dust around. Pay attention to renovated areas that are easy to overlook: inside wardrobes, beneath kitchen cabinets, window grilles, skirting boards and air-conditioning vents.
Avoid heavily perfumed cleaning products at this stage. They can cover the original odour temporarily, making it harder to tell whether the home is genuinely improving. A properly cleaned space should smell neutral, not strongly floral or artificially scented.
For homes with substantial carpentry work, professional post-renovation cleaning is often worthwhile. The practical benefit is not only a better finish. A trained team has the equipment and time to remove dust from detailed surfaces before your belongings, curtains and bedding bring more items into the flat.
Ventilate strategically, not just occasionally
Fresh air dilutes indoor pollutants, but ventilation needs to be consistent and sensible. Open windows and internal doors when outdoor conditions allow, particularly after cleaning or when new furniture has been delivered. Creating cross-ventilation by opening windows on opposite sides of the home is more effective than opening one window slightly.
In Singapore, weather and security may limit how long windows can stay open. Use the periods when the home is unoccupied or when rain is not blowing in. Ceiling or standing fans can help move air towards an open window, although a fan does not remove chemicals by itself. It only improves circulation.
Air-conditioning can make a closed home feel more comfortable, but it is not a substitute for fresh-air exchange. If the system was running during renovation, arrange for the filters and accessible components to be cleaned before move-in. Otherwise, settled dust and odours may circulate each time it is switched on.
Ventilation is helpful, but it has a trade-off. It may reduce the concentration of pollutants faster, yet it cannot stop ongoing emissions from cabinetry, flooring or furnishings. When a chemical smell returns after windows are closed, source treatment should be considered.
Give new carpentry and furniture room to air out
Built-in cabinets are frequent odour hotspots because their enclosed interiors have limited airflow. Open wardrobe, shoe cabinet, kitchen and vanity doors regularly in the first few weeks. Leave drawers open for part of the day where practical, and do not fill every compartment immediately with clothes, linens or children’s items.
The same applies to newly delivered mattresses, sofas and loose furniture. Remove packaging promptly and allow items to air in a ventilated room before placing them in a small bedroom. If possible, schedule furniture delivery early enough to give the home breathing room before the moving date.
Be cautious with common DIY odour absorbers. Charcoal, baking soda and coffee grounds may help with mild, localised smells, particularly in a cupboard, but they do not neutralise formaldehyde or solve a whole-home VOC concern. Ozone generators should also be avoided in occupied homes. Ozone can irritate the lungs and is not an appropriate shortcut for a family move-in.
Use an air purifier as support, not the whole solution
A good air purifier can be useful while the home is airing out, especially in bedrooms and nurseries. Look for a unit designed to address both particles and gases: a HEPA filter captures fine particulate matter, while a substantial activated-carbon filter is intended to help with some gaseous odours and VOCs.
The limitations matter. A small purifier cannot effectively clean the air in an open-plan living and dining area, and a saturated carbon filter will become less useful over time. Check the unit’s recommended room size and replacement schedule rather than choosing only by price or noise level.
Purifiers work best after dust has been removed and alongside ventilation. They are a valuable layer of support, not a replacement for cleaning or professional treatment where emissions are significant.
Test indoor air when the decision affects your family
Visual checks cannot tell you the level of formaldehyde or VOCs in a room. If you are preparing a nursery, have family members with respiratory sensitivities, or notice persistent odours after cleaning and airing out, air-quality testing gives you clearer information than guesswork.
Testing is also useful because the highest readings may not be where the smell seems strongest. A closed master-bedroom wardrobe, a study with floor-to-ceiling carpentry or a compact kitchen can hold more concentrated emissions than the living room. Results can help you decide whether to continue ventilating, improve cleaning, replace a problematic item or arrange targeted treatment.
Consider source-focused formaldehyde and VOC treatment
When odours remain after thorough cleaning and ventilation, a treatment designed for formaldehyde and VOCs can be the more direct option. The key question is what the process does. Some services mainly deodorise the air, while others are intended to neutralise pollutants at the source on surfaces and within the indoor environment.
Aura Home Solutions uses a non-toxic G-C3N4 neutralisation treatment under its FormaldeX service. The treatment is designed for newly renovated HDB flats, condominiums and landed homes, typically completed in two to three hours, with air-quality testing, annual follow-ups and five-year warranty protection. For households coordinating cleaning, moving and indoor-air preparation at once, one service plan can reduce the number of separate appointments and last-minute decisions.
Ask any provider what is included, whether the treatment is suitable for children and pets, how results are assessed, and whether there is written warranty coverage. Clear answers are part of a safer, no-surprises move-in plan.
Plan the move-in sequence to keep odours from returning
Timing makes a difference. Ideally, complete dusty rectification works first, then arrange post-renovation cleaning, ventilation and any air treatment before the moving lorry arrives. Bringing boxes, fabric furnishings and personal belongings into an uncleaned home gives dust more places to settle and makes follow-up work harder.
After treatment and cleaning, keep windows open when practical and avoid immediately adding many strongly scented products, new furnishings or freshly dry-cleaned textiles. Move essential items first, then unpack progressively. This gives you a chance to notice whether a particular room or cabinet needs extra attention.
A comfortable home should not require you to ignore a smell just because the renovation is complete. Give the space the same care you would give the people moving into it: clean it properly, let it air, check the air when needed, and address the source rather than hiding the signal.