Respirator,

Definition of Respirator:

1. Air filter, dust mask, self-contained breathing apparatus (SCUBA), etc., that protects its users respiratory system from harmful effects of exposure to airborne hazardous substances.

2. An apparatus worn over the mouth and nose or the entire face to prevent the inhalation of dust, smoke, or other noxious substances.

How to use Respirator in a sentence?

1. For a time everyone had to work with respirators.