I'm inferring that you've done this in the first person. Were you surrounded by people with the same experience, ie. was this detectable by everyone, or was this something that some people picked up on more than others?

Curious for two reasons: the top-level comment here on some people being able to diagnose Parkinson's by smell, and my own experience being exposed to people experiencing malaria (albeit in a non-clinical setting with _plenty_ of other overwhelming smells) and not registering a common olfactory experience.