Masks have a significant connection to protection in various ways:

1. Personal Protective Equipment (PPE): Masks are used as PPE to protect against airborne pathogens, chemicals, or particles in medical, industrial, and emergency response settings.
2. Safety masks: Masks protect against physical harm, like dust, debris, or splashes, in industries like construction, manufacturing, or healthcare.
3. Gas masks: Masks protect against toxic gases, chemical agents, or airborne contaminants in military, industrial, or emergency situations.
4. Respiratory protection: Masks filter out pollutants, allergens, or irritants, protecting the lungs and respiratory system.
5. Face protection: Masks shield the face from impact, like in sports or combat, or from harsh weather conditions.