Face masks must cover both mouth and nose
In an effort to encourage individuals to wear face masks during the current pandemic, numerous references have compared their use to that of seat belts — a simple device that can save lives. Yet, despite their simplicity, these devices only work when properly worn. While some might claim that wearing a seat belt shoulder harness across the chest is uncomfortable, the alternative of wearing the harness behind one’s back doesn’t allow it to work as intended. Likewise, while wearing a face mask might be uncomfortable, especially during hot weather, to be effective, it must cover both your mouth and your nose.
Steven M. De Lisi.