The way you've worded this makes it sound like if someone sneezes they and everyone around them will be hunted down like Logan's Run.
I know that's not what you meant as such, but it's staggering that you can't see why this isn't acceptable in a modern society.
@ForeverBlue92 was 100% correct in calling you out on it - the UK doesn't and shouldn't work that way. The emergency element of COVID is done, it's not an emergency, it's now an endemic disease. We have to live with it, and living with it doesn't include your suggestion above.