Anapnefstiphilia is a phlia for respirators and/or gasmasks. Respirators can hold a variety of appeals, depending on the person. Respirators can play a part in breath control, or asphyxiation;. they can also play a visual role, in making a person look machine-like, inhuman, or powerful. Some also use them for the concentrated inhalation of gasses or vapors, such as amyl nitratel (poppers), or ether.