Protective cover for respiratory device

A protective cover for preventing entry of particulate matter into a delivery hose of a respiratory device, the protective cover comprising:

• a filter member having a peripheral edge portion, the filter member composed of a filter material having a mesh size capable of preventing the particulate matter to pass therethrough;
• a support member having an inner edge portion and an outer edge portion, the inner edge portion of the support member being attached to the peripheral edge of the filter member, such that, the support member circumferentially surrounds the filter member, where the support member is made of a fabric material;
• and
• a securing member attached to the outer edge portion of the support member, such that, the securing member circumferentially surrounds the support member, the securing member capable of gripping an end portion of the delivery hose of the respiratory device such that both the securing member and the protective cover conform to the shape and size of the end portion when the respiratory device is not in operation.