A plastic mouth cover can be used for various applications. It helps keep out dust and dirt going inside the respiratory system through breathing. This cover has been used for long in the kitchen where airborne smoke, grease and food particles can make it difficult to stand during cooking. Individuals suffering from respiratory issues feel highly uncomfortable in such an environment. They have to take extra care and precautions when living or working in such environments.

A mouth mask may also be referred as the mouth cover but in some cases difference is made between the two designs. Masks made of plastic fabric are usually disposable and used only once. These masks are thrown after each use. It helps maintain hygiene and avoid contamination with an infected mask. In some designs, the cover is made of slightly hard plastic. Most places around the world have currently made it mandatory for everyone to wear some type of cover on the mouth and nose due to corona virus pandemic.