Unpowered respiratory protective headset and body suit and additional improvements to personal protective equipment

A personal protective whole-body suit, comprising:

• a body portion;
• and
• an unpowered respiratory protective headset connectable to said body portion to prevent infectious agents or contaminated air from entering there between, comprising:
• a respiratory mask, comprising:
• a flexible mask body having an interface section and defining a mask air inlet and a mask air outlet, said interface section being of a size, shape and material to form an air-tight seal around a nose and a mouth of a subject when worn;
• an inhalation valve disposed in said mask air inlet;
• and
• an exhalation valve disposed in said mask air outlet;
• and
• a hood comprising a hood body and a transparent face shield attached to said hood body, said hood being of a size and shape to be worn entirely over and enclose said subject's head and said respiratory mask while said subject is wearing said respiratory mask within said hood,
• wherein said hood defines an air inlet and an air outlet spaced apart from said air inlet,
• wherein said hood further comprises an inlet filter disposed in said air inlet and an outlet valve disposed in said air outlet,
• wherein said air inlet, said mask air inlet, said mask air outlet and said air outlet are configured relative to each other to direct air flow across an inner surface of said transparent face shield to prevent or reduce fogging of said transparent face shield during inhalation and exhalation by said subject when said unpowered respiratory protective headset is worn,
• wherein said mask air outlet is attachable to and detachable from said air outlet,
• wherein said transparent face shield has a top that extends beyond said subject's forehead and a bottom that extends beyond said subject's chin when said hood is worn by said subject, and
• wherein said air inlet of said hood is one of arranged proximate to or through said top of said transparent face shield and said air outlet of said hood is one of arranged proximate to or through said bottom of said transparent face shield such that, while in use, air flows into said hood through said air inlet of said hood and flows across said inner surface of said transparent face shield before reaching said respiratory mask.