This is a doozy of a conundrum
Yes, nobody has the right to infect someone else, however, at this point in time it is similar to asking someone to stop breathing... just in case.
In the future this will be common knowledge, but today it is way out there, woo-woo stuff.
The dis-ease happens first, then a disease shows up.
Without the dis-ease, you won't get sick no matter how many "viruses" are in the air around you.
But if you have been letting the dis-ease build up in you, it will just happen that "just by chance" you will get the flu.
Such as, i was not feeling up to snuff, the world was having this strange fear pandemic. I had been self isolating for months, almost no contact with anyone, wearing a mask when i went out (because i was doing construction for friends)
And sooooo, my roomies came back because they had to visit a dying friend (Chinese) and all her friends (Chinese) and my roomies brought this thing home.
After not having anything for years, BAM it hit me.
So, in the future we will understand this dynamic, and we will understand that the victim was attracting it.
And remediation will be helping the victim to stop attracting the shit. Not blame on either's part.