Znose for classifying body odor/halitosis compounds

There has been interest in the body odor support forum recently about the Znose. We do not know if it is the only option for detecting body odor/halitosis using an 'Enose' (electronic nose) to a clinical degree, however it certainly seems up to the job ; measuring molecules in parts per trillion, being reasonably portable, and giving instant results of any peaks in the air. It uses gas chromatography for measurement. This video is from 2006, which seems to be the older Znose model. An potential research route for defining all forms of body odor/halitosis would be to use such a device in a study. In fact the Znose was used for a 'surface' body odor study in the past

Analysis of Body Odor using the Znose (PDF, Edward J Staples) 

We are informed a Znose is around $28,000 but do not know if it can be, for example, hired.