Get well soon Stoots. My wife had it for definite on as she has had a positive antibody test and she had similar symptoms to you with the smell of burning/smoke too. She caught it early visiting our daughter who was at Uni in the East End of London on the weekend of 28th Feb/March 1st before the first lockdown.
She was 57 and had a few days before symptoms of a blinding headache, loss of smell and taste and a high temperature hit around 5th March. She was essentially better by about when the lockdown was announced around 22nd March.
Smell only just back to normal now.