What the hell are you talking about? Nowhere in the Constitution is a response to disease even mentioned. It sure doesn’t mention anything about bombing cities. The Constitution has been interpreted very loosely to allow the government the powers it has now, but bombing US cities is beyond the scope of even that. The idea that they have a constitutional duty to do so is even more absurd.
The Constitution is an actual thing, you know. You could read it instead of just making stuff up.