This should also be easy.
Arrange to bring TWO samples of a “coronavirus” to our lab so that we can analyze them ourselves and take pictures for this website. To simplify this, you can bring autopsy samples of lung tissue from TWO people who died from “coronavirus” along with proof they were in contact with each other and both “coronavirus” samples share the same genetic material.
How can “coronavirus” be contagious if nobody can even prove that it exits?
This challenge will remain posted here until proof is submitted that “coronavirus” is contagious.