A mile might be a stretch, but I can attest from Iraq and other environments when I was in the field for a long period of time, that when someone is clean, you can smell them before you can see or hear them a lot of times
“when someone is clean, you can smell them before you can see or hear them a lot of times”
if you can smell something that is clean, I would argue that it is not clean at all, after all you cannot smell nothing.
(yes I know that some people claim outer space smells bad, like polycyclic aromatic hydrocarbons)