Joy Milne has an incredible sense of smell that is able to recognise Parkinson's disease on the human body.
She detected Parkinson's on her husband, Les, 10 years before he was diagnosed by doctors.
Now Joy, from Perth, is using her ability to help scientists develop a diagnostic test for the condition.
video - www.bbc.co.uk/news/av/uk-scotland-42366104/the-woman-who-can-smell-parkinson-s-disease
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