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  Another year has come to an end, and once again, we bring you our summary of what’s happened in the world of odours during 2025. Each year, the number of posts we publish continues to grow, which makes it increasingly challenging to put together a summary that people will actually read to the end. Still, this moment is reserved for those of you who are truly passionate and eager to keep up with everything that’s been happening in the field of odours.

  Before we dive into the review, there are two things I’d like to mention. First, the domain Olores.org was registered back in 2005—meaning we’ve now been sharing news and insights on odours for 20 years. Time really does fly! We’re all a little older and, hopefully, a little wiser. Our first monthly newsletter in English was sent 12 years ago, and we’re proud of how far we’ve come.

  Secondly, we’d like to remind you that we are an odour consultancy company that one day decided to share our knowledge—and that of others—freely with the community. Occasionally, companies have sponsored this website as a token of appreciation, which we’ve always valued. However, it’s been quite some time since we last had a sponsor. We continue doing this purely out of passion, but as a for-profit company, Olores.org doesn’t generate income for us. If you’ve enjoyed our work over the years, please consider advertising with us to help support 20 years of dedication to the odour field. Thank you!

   Now, let’s get started with our review of this year’s highlights.

   A pioneering E&T&C Certification (Engagement, Transparency, and Communication) has been developed to assess the performance of composting plants and other sectors in their relationships with nearby communities, particularly during recurring odour-impact situations.

    This framework promotes citizen participation, increases transparency, and optimizes communication channels, with performance verified either internally or through independent external audits. Its objective is to measure the facility’s level of commitment, transparency, and communication in managing odour-related conflicts, representing a paradigm shift from traditional opaque industrial practices.

A. Antón*, C. Díaz & C. Izquierdo

Ambiente et Odora SL C/Uribitarte 6, ground floor. 48001, Bilbao, Bizkaia
* ainhoaanton@ambienteetodora.com