The other day we mentioned as story about smelling peanut butter as a diagnosis for Alzheimers Disease.

Hold on there!  David Knopman from the Mayo Clinic says the study is interesting but it doesn't mean much.

The sample, in the test, was way too small to jump to any conclusions.  People, as they get older, lose their ability to smell for many different reasons.  And, a persons sense of smell being different between the left and right nostril is not unusual.