A personal protective device (PPE) comprising a face cover assembly and a bodysuit configured to be worn by a human user. The device protects users against airborne aerosol particles containing viruses or other infectious agents while enabling improved flexibility relative to prior art designs. The device includes a helmet-like” rotating face cover assembly that fits over the user's head and attaches to a collar on the biohazard bodysuit. This rotating face cover assembly has a plurality of different mask sides, each with differing geometries or other properties. The device enables a user to rotate (either manually or by electric motor) the masks and select a given mask side that best meets that user's needs. The different mask sides can accommodate different facial geometries, eyewear types, and use cases, such as operation in more hostile environments.

An interchangeable filter facemask apparatus for providing a variety of different filtration options includes a mask body including a body perimeter portion, a sidewall extending from the body perimeter portion, a body left side, a body right side, a body nose side, a body chin side, a body outside, and a body inside. The sidewall has a filter aperture extending from the body outside through the body inside. A headband is coupled to the mask body. A body engagement member is coupled to the body outside adjacent an aperture perimeter of the filter aperture. Each of a plurality of filters has a filter outside, a filter inside, and a filter perimeter. Each filter has a filter engagement member coupled to the filter inside adjacent the filter perimeter. The filter engagement member is selectively engageable with the body engagement member to cover the filter aperture with the filter.

A face mask and method of use are disclosed. A base of the face mask is placed around a lower region of the person's nose. A horizontal wall of the base is positioned under the person's nose and first and second bosses extending upwardly from the wall are positioned in the user's nostrils. Holes in the bosses allow the user to breathe through their nose. A filter assembly extends downwardly from the base and fits over the person's mouth and under their chin. An elastic frame on the filter assembly is press-sealed to the user's skin on either side of their mouth and under their chin. The horizontal wall prevents airflow between the environment and a space in front of the user's mouth. Exhaled and inhaled air is forced to pass through the filter assembly's filter, trapping infectious respiratory moisture droplets in the filter.