Some loss of smell and taste is common with colds and flus./ Loss of smell from Covid tends to be extreme as in you lose the sense entirely. Did you experience anything like that?Early on I suspect I did - Late January/Early February 2020. Had some weird illness that suspiciously had the symptoms of covid, with the loss of sense of smell and taste. Had just returned from abroad then.
But at that point they weren't saying that was covid, and the UK's attitude was that if you have not been to China, it's not covid. Didn't think much of it then.