Well, I'm glad I don't own a pub as you would be barred permanently for this incredibly stubborn, inconsiderate approach.
Please, please play along. It's for everyone's good. It's not a conspiracy and it's not all out to get you.
You'd be contacted, and the tracers would establish if you had come within 2m for more than 15 minutes of someone affected, or within 1m for any period of time (beyond just walking past), and in that case you would. Otherwise you'd be warned and asked to watch out for symptoms, which is probably going to influence people ensuring they get a test if they sort of suspect symptoms.
I'm getting thoroughly bored of
refuseniks. They're probably the same people who get into nonsensical arguments with Police Officers (something which, oddly, has never happened to me).