Moreover, why did plague masks have beaks?
The typical mask had glass openings for the eyes and a curved beak shaped like a bird’s beak with straps that held the beak in front of the doctor’s nose. … The purpose of the mask was to keep away bad smells, known as miasma, which were thought to be the principal cause of the disease.
In this way, why are plague doctor masks shaped like that?
Plague doctors wore a mask with a bird-like beak to protect them from being infected by deadly diseases such as the Black Death, which they believed was airborne. In fact, they thought disease was spread by miasma, a noxious form of ‘bad air.