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Odour Removal Service
A powerful, unpleasant smell—whether from a recent incident like a flood or fire, or a persistent problem like damp and mould—can leave a lasting negative impression on employees, customers, and residents, making a home or workplace unbearable.
Rentokil Specialist Hygiene’s experts can provide rapid, effective odour removal to get your property smelling its best. We offer a no-obligation site survey to quickly assess your needs and develop a tailored plan, ensuring your home or business can be restored as soon as possible.
What is Odour Removal?
Odours can typically be broken down into two categories:
- Transient odours, that occur for a short time as a result of an activity such as smoking, cooking, or from visiting the toilet.
- Persistent odours, which are a constant presence caused by an underlying condition or in the aftermath of a significant incident such as a fire or flood.
Bad smells are caused by a mixture of chemicals which would not ordinarily be present in the air we breathe, for example in a washroom, poorly maintained pipework, ineffective cleaning and inadequate ventilation can cause excessive levels of Ammonia and Sulphur Dioxide to be present, both of which are unpleasant to breathe in and are associated with a washroom being perceived as unclean.
Odour removal can be carried out in a number of ways, but many DIY services only mask odours, rather than removing or destroying them. Effective odour removal destroys or captures the airborne chemicals causing the bad smell, leaving the air smelling clean and free from potentially harmful chemicals.
What Causes Odours?
Odours are complex, and while pleasant scents are a matter of personal taste, unpleasant ones typically cause a negative reaction. In homes and commercial buildings, these smells have many sources.
In some cases, an underlying problem in the building itself will cause bad smells. A prime example is the build-up of uric acid in washroom pipes, which creates a strong, unpleasant ammonia smell. In cases like this, it's essential to fix the root cause first with a specialist urinal cleaning service before treating the airborne odour to prevent the smell from returning.
Odours can also result from a specific event like a flood or fire. After the initial damage is cleaned up, a crucial final step in the restoration process is to destroy any lingering odours trapped in the building's materials. This is also critically important after a pest infestation. Decomposing rodents or insect waste can leave behind foul and persistent smells that need specialised treatment to fully eradicate, even after the pests themselves have been removed.
Why Professional Service Outperforms DIY
The quick and easy option when faced with unpleasant odours is to reach for the aerosols and other room fragrancing products available from the supermarket. While this will provide short term respite, it is only masking the issue. Professional odour removal services don’t mask odours with more airborne chemicals, they actively remove or destroy the molecules and particles in the air that cause the smell.
Air purifiers are a good choice for some low level transient odours, but in situations such as post-fire damage smoke odour removal they are often undergunned to remove the amount of airborne odour present. Filter mechanisms can quickly become saturated or clogged, rendering them ineffective and your property still smelling of smoke.
A professional odour removal service can help to establish the source of the odour and provide recommendations on how it can be removed or resolved, it will also destroy all airborne odour sources from the property leaving it smelling fresh and clean.
Common Odours Rentokil Can Help With
Fire damage - In the aftermath of a fire, once a property has been restored physically to its original state, the smell of smoke can linger for a long time. This smell is often a recall trigger to the stress and emotion associated with the original fire. The cause is microscopic particles of soot and Volatile Organic Compounds (VOCs) that are released from walls and ceilings long after the fire has been put out.
Flooding - Any standing water, particularly flood water with possible sewage and organic matter, will result in odours. Once flood water has been removed and the drying process has commenced, saturated carpets, floors and walls will release moisture into the air, carrying with it any sources of odour. As bacteria breakdown organic matter, they release gases such as hydrogen sulphide which gives that familiar ‘rotten egg’ smell, making it even harder to reoccupy a flood hit building.
Damp and mould - Just as bacteria break down organic matter to release bad smells, Black Moulds such as Aspergillus niger also break down organic material to release microbial volatile organic compounds. It is this process that leaves that familiar ‘musty’ smell in buildings.
Smoke and tobacco odours - For landlords and hotels, the smell of cigarettes and vaping which can also leave behind a lingering chemical residue and a strong scent are a major issue. These odours are difficult to remove because the particles and residues cling to soft furnishings, walls, and even ventilation systems, requiring professional deep cleaning and specialised treatments to fully eradicate.
Kitchen drain odours - These can be caused by a build-up of fats, oils, and grease (FOG) in pipes, which can lead to blockages and unpleasant smells. Deep fat fryers can also cause lingering odours.
Pest infestation - Pests like rodents, birds, or insects leave behind a messy trail that is often very smelly. Droppings, urine, nest materials, and even dead bodies can all create lingering odours. While removing the source is crucial, it's just as important to get rid of the airborne particles that carry these smells throughout the building to truly restore the property.
Washrooms - A typical washroom can be a breeding ground for multiple odour sources. A combination of human waste, urine, damp conditions, poor ventilation, mould, and bacteria all contribute to a range of unpleasant smells.
What Does Our Professional Service Include?
Rentokil Specialist Hygiene provides a bespoke and professional odour removal service, to identify and remove odours from a building. We will also advise on any additional works needed to remove the source of the odour. Our tailored professional and expert odour removal service is available nationwide to both domestic and commercial customers.
Our Ozone Odour Removal Service
Ozone is a powerful oxidiser that destroys odours, rather than masking them, at a molecular level. Ozone is a naturally occurring gas in our atmosphere, but in high concentrations is an extremely effective method of destroying odours and turning the molecules that cause them into harmless by-products. Because of the levels of ozone needed to be effective, treatment areas need to be unoccupied for the duration of the service and thoroughly vented afterwards. Released ozone from the treatment converts back to simple oxygen molecules in the air making Ozone one of the most effective and sustainable treatment options for odours available today.
We use a range of ozone generators to treat the smallest to the largest rooms for bad smells, restoring them quickly to their clean smelling best.
Why Choose Rentokil
With over 50 years of experience, Rentokil Specialist Hygiene are the UK trusted experts in odour removal services for both domestic and commercial customers.
- Industry trained, specialist odour removal technicians for every job
- Wholly employed, fully trained ozone-use operatives
- Expert, consultant-led risk assessment on every site
- Specialist ozone treatment equipment and PPE/RPE
- Full regulatory compliance and detailed post-clean reporting
- Safe waste disposal through licensed carriers
- Trust us to restore safety, hygiene, and peace of mind
How to Arrange an Odour Removal Service
To arrange an odour removal service, get in touch with Rentokil Specialist Hygiene today.
Day or night, you can trust us to get to you to help with all ventilation duct cleaning, call our friendly team of experts on 0808 159 1403 or contact us here 24/7/365.
Frequently Asked Questions about Odour Removal
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What is a professional odour removal service?
A professional odour removal service is a specialist treatment that removes bad smells from commercial environments by neutralising odour molecules at the source. Unlike air fresheners that only mask the smell, professional odour removal uses ozone technology and trained technicians to safely eliminate persistent malodours caused by smoke, mould, sewage, and more. It’s ideal for facilities such as offices, healthcare sites, retail units, factories, and food preparation areas.
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What causes bad odours in commercial buildings?
Common causes of lingering odours include:
- Smoke (from cigarettes, vapes or fire damage)
- Biohazard incidents (from bodily fluids, such as vomit, urine and faeces)
- Mould and fungal growth
- Flood water and sewage leaks
- Food or grease build-up
- Poor ventilation or HVAC issues
- Pest activity or animal waste
Odours are often caused by the chemical breakdown of organic matter, allowing bacteria and smell particles to be absorbed into carpets, walls, and air systems.
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Can bad odours affect my staff or customers?
Absolutely. Persistent bad smells can negatively impact:
- Indoor air quality
- Employee productivity
- Customer perceptions
- Health and safety compliance
In some sectors like healthcare or food processing, lingering smells may also result in regulatory penalties or reputational harm. A permanent odour removal service helps businesses maintain a clean, compliant environment.
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What’s the difference between odour removal and air freshening?
Air fresheners simply mask unpleasant smells with a fragrance. This does nothing to eliminate the source and can sometimes worsen indoor air quality. In contrast, professional odour removal uses advanced disinfection, sanitisation and ozone treatment to completely remove the molecules responsible for creating the bad smells, offering a long-term solution rather than a temporary fix.
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How does ozone odour removal work?
Ozone odour removal works by using ozone generators to release O₃ gas, which breaks down and oxidises odour-causing particles. The gas penetrates porous surfaces and air spaces to neutralise smells at the molecular level. The process is safe when delivered by trained professionals, who isolate the area, monitor ozone levels, and ensure rooms are safe to re-enter.
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Is ozone treatment safe for odour removal?
Yes — ozone treatment is safe when performed by certified technicians using the correct PPE and monitoring equipment. The area should always be ventilated post-treatment and thoroughly tested to ensure it's safe for use. Rentokil Specialist Hygiene’s ozone odour removal service adheres to strict health and safety standards, using room-specific calculations to apply the correct ozone dosage.
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Is your odour removal service suitable for all industries?
Yes. We provide tailored commercial odour removal solutions across multiple sectors, including:
- Healthcare and medical facilities
- Hospitality, retail and leisure
- Education and public buildings
- Offices and corporate premises
- Manufacturing and industrial settings
- Property management (e.g. void property cleans)
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Can I remove odours myself without professional help?
While basic cleaning or air fresheners may temporarily reduce odours, they rarely remove the root cause, especially in commercial or large-scale environments. DIY methods can also overlook hidden sources (like inside ducts or behind walls), and improper ozone use can be dangerous. A professional odour control disinfection service ensures safety, effectiveness, and long-term results.
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How do I book a professional odour removal treatment?
You can request a free site survey by contacting our team online or calling us directly. A qualified hygiene consultant will assess your needs, recommend the best treatment plan, and schedule a visit from our certified technicians.
We also offer minimal-disruption scheduling, including out-of-hours servicing.
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Do you provide odour removal services near me?
Yes — Rentokil Specialist Hygiene operates across the UK, with regional teams located nationwide. Whether you’re based in a city centre or a remote location, we have local experts ready to help with fast, discreet, and certified odour removal services.
