With the possibility of virus, a circulation system moves moist air past a large, flat, moss covered stone. An evaporator coil removes moisture from the atmosphere and passes it over the heat return of a condenser coil. Between them, UVC lights breakdown the DNA of Sars Cov-2. Scrubbed air pushes downward through misters in a light hood, then out from the center of the table, as in an operating room, from patient outward past doctors gathered round.