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Environmental odour management

Environmental odour management


With more than 30 years of experience Olfasense offers a full range of services to identify, measure, assess and control environmental odours; and make sure your odour emissions are under control.

Providing many of the world’s leading companies with a comprehensive range of odour analysis and odour management techniques, we think our track record speaks for itself.

Our key competences

There’s never been a better time to keep your neighbours happy and avoid costly social, regulatory and legal conflicts.

Measure… evaluate… control odours

Odour emission measurement is crucial to the regulation and control of environmental odours. Before you can define the extent of an odour problem, you need first to identify potential sources of odour emissions and understand their magnitude and characteristics.

Our environmental odour consultants are highly experienced in the measurement of odour emissions across all types of industry and will design odour sampling strategies to reflect your specific requirements.

All odour sampling and analysis is conducted in accordance with the EN 13725, European Standard for Olfactometry or other, published national and international technical and quality standards (such as EN 15259, EN 16911-1, VDI 3880, VDI 3884).

Sensory odour evaluation meeting the highest standards

Through our accredited odour laboratories specialising in sensory odour analysis, we offer you a wide selection of specialist odour testing services, including – but not limited to:

  • odour concentration analysis (ouE/m3) according to EN 13725
  • hedonic tone and odour intensity according to VDI 3882 and NVN 2818
  • odour type descriptions
  • odour threshold determination of pure substances and odour mixtures

And, thanks to our mobile odour laboratory, we can deliver global knowledge on environmental odour management in your local area – even in countries where there isn’t an Olfasense office.

Molecular odour evaluation using cutting-edge technologies

Olfasense is in a unique position to have both sensory and molecular odour analysis capabilities in-house. We use molecular analysis, like high-resolution GC-MS and GC-Sniffing, to characterise the chemical composition of air samples, and to determine the concentration of specific airborne pollutants. 

Examples of services offered in the field of molecular odour evaluation are:

  • High-resolution GCMS, to characterize an odour in terms of specific VOCs
  • GC Sniffing, to identify compound(s) responsible for an odour contamination in an air sample
  • Gas chromatography coupled with ion-mobility spectrometry (GC-IMS), a very fast method to detect various substances within a couple of minutes
  • analysis of siloxanes in biogas and air samples
  • determination of specific compound groups (e.g. mercaptans and ketones)

Manage your odour impact risk

Assessing the odour impact of an industrial installation is a complex process, and we are happy to advise you on the most suitable solution for your business. Our portfolio includes immission monitoring and impact assessment, including grid and plume inspections according to EN 16841, Part 1 and 2.

All our measurement techniques address the full range of factors to consider when conducting an odour impact assessment. These factors include the odour intensity, frequency and duration of exposure, offensiveness of the odour, and the odour sensitivity of those living in the affected environment according to VDI 3940 Part 3, 4 5.

One tool, specifically designed for odour impact assessment, is the Olfasense Online Field Inspection Manager.

Sophisticated odour modelling technology

Our consultants have extensive experience with a wide range of odour dispersion models, including conventional Gaussian models (e.g. Aermod, ADMS), and more advanced 'puff' and 'particle' dispersion modelling techniques (e.g. Austal, CALPUFF).

This offers means to assess the way in which environmental odours and air pollutants disperse within the atmosphere, making sure your site is as environmentally sound as possible by assessing the odour impact, measuring compliance and optimising odour control strategies.

Odour control system assessment & performance testing

Olfasense has accumulated significant global experience in odour mitigation and odour control. We’ve seen many applications of odour mitigation and control technologies succeed and fail across many industry sectors, so we can confidently assess the options within the context of your particular area of work.

We also have a great deal of experience in the development of effective operational odour management plans. These documents define the measures that are put in place to minimise odour release and odour impact risk on a day-to-day basis, and to manage community communication and odour complaints.

If a site that you manage emits odours, it may affect local residents.

Our environmental odour consultants are highly experienced strategic communicators, and can provide detailed advice on how to optimise communications and manage crisis situations to ensure a successful balance between the interests of the operator and those of the surrounding community.

We also offer a range of web-based solutions that are designed to identify the probable cause of odour complaints and potential spurious allegations or malicious behaviour. The Olfasense Ortelium® tool is a good example of successful odour complaint management.

Your key to managing odour complaints

Ortelium® simplifies odour complaints management by making it a more transparent process.

The Ortelium® application collects, displays and evaluates the relevant data, communicating it in a meaningful map-based display. By making forecasts and giving feedback to all parties involved in cases of reported odour nuisance, it can enhance community relations and defuse conflict situations.

Ortelium also offers features to facilitate and enrich odour measurement procedures, as well as for odour control. To find our more please visit

An odour monitoring programme designed just for you

From continuous monitoring to source analysis, the wide variety of ambient air monitoring methods available means there’s plenty of scope for fine-tuning a solution to meet your needs – so that’s exactly what we do.

We’ll find the ambient odour monitoring techniques and devices that are most appropriate in terms of cost, reliability, level of detail and ease of operation.

In this way, we can create an odour monitoring strategy that will give you the best result.

We have more to offer

We routinely assist our clients with a number of our services to supplement any of our environmental odour studies.

Global odour knowledge in a local context

Olfasense is everywhere! We can deliver cutting-edge odour consultancy and assessment services worldwide, thanks to our mobile odour laboratory and special team of experienced senior field technicians and odour consultants.

Our global projects team has particular experience in the logistical and cultural aspects of worldwide service delivery – so wherever your project is located, we can handle it.

Call in the odour experts

Looking for professional support in legal proceedings related to odour? 

Skilled in gathering and preparing evidence, reviewing third-party expert reports, and advising clients and their legal representatives on a wide range of matters, our expert witness will help ensure that legal proceedings go smoothly.

Specialist training in environmental odour management

If you need to be on top form in any aspect of odour assessment and control, you’ll want Olfasense’s specialist expertise at your fingertips.

By investing in one of our bespoke odour training courses, you’ll not only have the opportunity to learn from the experts, but you’ll also get invaluable, tailored advice.

With a range of group and individual odour training packages, we cater for staff in both industrial and regulatory roles.

Target Industries