An apparatus and method allows for the construction of an inflatable, protective enclosure that provides a temporary, contaminant free environment for one or more individuals. The approach results in a protective suit and/or enclosure that is inexpensive, compactly stored and light-weight, yet provides a reliable source of filtered, contaminant-free air as well as upper-body and/or full-body protection for one or more persons. The protective suits/enclosures described produce an over pressure environment within the protective enclosure so that a positive flow of filtered air is maintained between the interior of the suit or enclosure and the outside environment, thus assuring that no contaminants may seep into the protected, contaminant free interior. The protective enclosures protect individuals from contact with and inhalation of noxious chemicals, inorganic and organic dust and particles, as well as radioactive particles that would ordinarily be associated with industrial emergencies and/or an intentional terrorist attack.