THE MICHAEL J. FOX FOUNDATION FOR PARKINSON'S RESEARCH Take the Smell Test Challenge A free scratch-and-sniff test can help researchers learn more about brain health. Request your test at mysmelltest.org/news or scan the QR code. DXD THE MICHAEL J. FOX FOUNDATION FOR PARKINSON'S RESEARCH Take the Smell Test Challenge A free scratch - and - sniff test can help researchers learn more about brain health . Request your test at mysmelltest.org/news or scan the QR code . DXD