I loved how they thought back then. When you compare it to what we know, it seems silly and foolish, but plague doctors could be considered real heroes if you compare it to our knowledge. If they knew what we knew now about sicknesses, they would have decided they weren't qualified to do anything. But because they didn't know, and despite most risks known to them, they still braved the plague in hope of helping people. A true plague doctor has my respect.