> I just don't get it. Why bother? The "mask on the chin" allows one to quickly pull up the mask to cover the face, at the cost of potentially contaminating th

> I just don't get it. Why bother? The "mask on the chin" allows one to quickly pull up the mask to cover the face, at the cost of potentially contaminating the inside of the mask (which then touches the face). The "mask not covering the nose" might be a badly fitted mask slipping down, or it might be the same case as the "mask on the chin" (allowing one to quickly pull up the mask to also cover the nose).