Thankyou John, fascinating stuff, I guess its similar to canine cancer detection though with this it will be possible to explore and evaluate in a precise way under scientific protocols.
May not be relevant but Iv been told on occasion over the years that I have a 'musky' scent, always by females . They assure me it is not unpleasant thank goodness ! My daughter just said she sometimes notices it .
As if we don't have enough to deal with ! Wonder if my son will let me borrow his aftershave.
One final thought I wonder if it would work on atypical Parkinson's,known cause variants such as c.monoxide induced or animal models used in trials.

Nigel