[otherme123]

Even the most extreme views of libertarianism have the principle of "do not harm others" as the limit for one's freedoms. In fact, other political philosophies have a softer view on this principle, like utilitarianism (maximize wellness even if it goes against a minory).

Rothbard, and I doubt you can find anyone much more libertarian than him, wrote that if you knowingly cause suffering or death of another human being, you must be punished "an eye for an eye". In this case, if you spread covid and somebody dies or gets injured because of it, you should fully restitute the victim, even being executed if the heirs decide so.

From a philosophical point of view, freedom or libertarianism doesn't help you here. I would like to read any libertarian serious author that supports your views.