Huh? I make no claim. The claim is that there is something called a virus that causes illness. That’s not my claim. Those who make a claim carry the burden of proof. That’s how it works.

All I’ve asked for is proof of their claim that virus is carried in the lung sputum or other fluids among those infected.

Oh, and appeals to authority are my least favorite logical fallacies. I don’t care who claims what. Credentials mean nothing unless you choose to outsource your opinions to some authority. If you need this affirmation to process logical rationale, then yes I have an army of scientists who are colleagues and agree with me. But you can bring any virologist in the world to me, bring them all. Not one of them can find any virus, and I mean any virus ever, in the fluids taken directly from a sick person. So either use logic to deduce whether this poses a problem to the claim, or go ask some “scientists” and let us know their excuse for never finding virus in some snot.