A ventilation mask, also known as a respirator, is a protective device worn over the mouth and nose to protect the wearer from inhaling harmful substances such as dust, fumes, vapors, and infectious particles. It creates a barrier that filters out these harmful substances from the air being breathed in, helping to prevent respiratory illnesses and other health hazards. There are different types of ventilation masks, including disposable masks that are commonly used in medical and industrial settings, and reusable masks that are often used by construction workers, firefighters, and other professionals who work in hazardous environments. Some ventilation masks are also equipped with valves to make breathing easier and more comfortable and come in different sizes to ensure a proper fit for the wearer.

ইংরেজিতে "ventilation mask"এর সংজ্ঞা ও অর্থ

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