Hello again.

I have been working on some other projects, and have not had much time to experiment with mones.

It's astonishing how cheap sensing technology has become (and the processing required to make sense of all that data), and I was wondering how much work people have done on sensing pheromones (and making distinctions between similar but related pheromones) using electronic noses.

As I understand it, polymer technology may be the more interesting route to go, and there are various papers on making your own noses. I think the idea is you use a few different polymers and it is the ratio of response that tells you what chemicals you are sensing. Polymers seem cheap enough in the units required to make your own nose, but the main suppliers only sell in bulk - 25 g a pop, which is high hundreds or low thousands of dollars.

Anyone have expertise here, or who has experimented with e-noses?

I am a bit tired now, but there has been work on detecting the scent of fear electronically, and if you search on google for relevant terms with "filetype:pdf" or on google scholar, various academic papers of relevance will come up.