Like having a really bad cold all the timeSimon Tatham is (or should be) well known for developing the popular telnet (and others ) client "PuTTY". Just following links from here and there, I chanced upon his personal FAQ page. Which is essentially about one question & its variants: "Why/How doesn't he have a sense of smell?"
Evidently having got a lot of this, Tatham patiently explains that this is called anosmia and there are other people who have it. The rest of the FAQ is educational even if you aren't olfactorily-challenged.
Wonder if he can smell a rat.