> I am skeptical. A test based on the sense of smell would have a very high amount of noise. There is no good, concrete measure of a person's sense of smell. P

> I am skeptical. A test based on the sense of smell would have a very high amount of noise. There is no good, concrete measure of a person's sense of smell. Parents with young children in diapers might disagree. I can think of one test that occurs consistently and is easy to validate. (Joking aside, I do think about the fact that I can detect soiled diapers as evidence that I can still smell just fine!)