How to Wear a Disposable Face Mask In many work environments, face masks are critical for keeping employees safe against breathing in toxins, contaminants, or other harmful particles in the air. While wearing one is second-nature for many associates, if you’re new to the practice, it can feel unfamiliar at first. Ensuring a proper fit isn’t just essential to your comfort; it’s also critical to keeping you and your fellow employees safe and healthy. Here, we go over the basics of wearing a face mask properly to ensure safe breathing.