One way you could be a better student, or human-being in general is to wear your mask at all times, aside from eating, of course. The other way, which you should be doing both, is to social distance as much as possible. If you do, however come in contact with people or objects, wash your hands thoroughly with soap and water.
The Egyptians and Greeks believed that mental illness was a result of supernatural forces. In using strong smells, they hoped to drive out evil spirits inhabiting the body.