The present disclosure delineates both active as well as passive respiratory filtration systems. The respiratory filtration systems are configured to be worn by a user, providing the user protection from the ambient environment, possibly containing microorganisms, pathogens, particulate matter, and the like. The respiratory filtration system is also designed to protect others by filtering the exhalation air released into the environment by the user. The disclosed respiratory filtration system(s) includes one or more hygienic materials. The hygienic materials are carefully selected and disposed at predetermined locations within the respiratory filtration system, so to optimize user to the observer(s) communications, especially the oronasal cover. Optimized communications include the transmission of distortion-free speech and/or unobstructed view of the user's oronasal area, especially the mouth.