From the pictures, it looks like it's using sensirion VOC sensor. There are plenty of "experimental" VOC detectors in the market, including BME688/690 with their AI SDK, so far I haven't seen a single reliable industry-grade application, only demos that work sterile conditions and fail in the harsh real-world conditions.
Yes, many current solutions rely on VOC sensors such as those from Sensirion, and we share the observation that a lot of the existing implementations remain at the demo stage and struggle in real industrial environments.
In our case we are somewhere in between research and real deployment. We recently completed research on detecting food infestation — across different insect species and different food samples, and the results were successful enough that we submitted the paper for publication.
At the same time, we are fully aware that this is not yet an industry-grade solution tested in environments like grain silos. For example, heavy dust is a major factor that can affect sensor performance without proper filtration, so there is still engineering work to be done before large-scale deployments.
However, we believe the core detection capability is already promising, and we are now focusing on solving the practical challenges needed to move from research results to robust industrial applications.