Quite early on, I recall seeing a table with symptoms vs C19, regular flu and cold (yes/no/maybe in each vs each) and the argument re: anosmia/ageusia in the up-to-recent gudance is that it wasn't as much a key factor unique and/or consistent with COVID, so it was excluded in leiu of those factors that were more useful for official purposes (minmaxing to reduce false-positives/negatives, or something).
Which makes the change to include it (with no obvious pathological changes to the situation) smell fishy to me, assuming I can still smell[1]. I'm fairly sure that I could take my accumulated 'feelings' and decide that I need a test, but I'd be fooling myself[2] and (much as I'd like to know if I have it[3]) I would be reducing the chance of another worrier, probably more genuine, to have their own concerns definitively addressed. It's not worth crying wolf on a macro level, though obviously a more self-interested look at the given Nash Equilibreum might point otherwise.
It's why I'm most interested in the "have you had it" test, which (when positive) gives 'post facto' good news that should continue to remain good, compared to the "do you have it" on in which the only 'good' result is a negative, but with no reason to believe it'll last. On the basis that history is immutable but the future is relatively unknowable, I'd happily plump for the chance to narrow down my status with the former, if freely offered, with fewer qualms about it than risk getting addicted to regular 'top up' tests to reconfirm I'm pre-Corona (or post-Corona, but having missed the actual effects of the episode).
Talking of taste, BTW, I saw earlier that "In France, 150,000 tonnes of high quality cheese went off last week, because farmers can’t sell it." - I don't know whether to believe that. If it aint threatening to walk off the plate, those kinds of cheese not quite ready to eat! (And though I'm not someone who has actually tried anything like Casu Marzu, the existence of such a product indicates that there is a market for virtually everything...)
[1] Which I can, at least up to my normally low levels. I'd never get a job as a perfume designer (or semellier), though maybe I could better stand to work on the production line a perfume factory.
[2] I'm not a hypochondriac. If anything, I might be the opposite. Hyperchondriac? There seems to be no handy antonym for "that bad feeling within that funny bit of the body".
[3] Before you worry, what I feel now (elements of mild hay-fever probably) similarly applied to me more than a month ago, so at least one of those datum points (and for almost all the time between then and now) cannot be It, and thus I have no reason to assume the other is either.