An armed security guard in Kenosha was just faced with a subject claiming to have Corona threading to cough on him.
This guard asked if he would be justified to shoot because Corona Virus is a potential deadly disease.
Unfortunately you would not, why? The jeopardy or danger of great bodily harm or death must be IMMINENT. Even if this person has Covid-19 and infected you the risk of great bodily harm would be days away, not immediate, therefore you would not be justified.
Thanks for the great question Ryan.
Stay Safe!