A portable, emergency breathing apparatus is provided that comprises an elastomeric bladder adapted to receive an emergency supply of pressurized oxygen-containing gas; valve means adapted to inject the oxygen-containing gas into the elastomeric bladder; conduit means providing gaseous fluid communication between the elastomeric bladder and a mouthpiece; and valve means adapted to control the flow of the oxygen-containing gas from the elastomeric bladder through the conduit to the mouthpiece.

A portable air purifier device for emergency use by an individual in an atmosphere that contains air which has been contaminated with one or more combustion products, said combustion products comprising at least in part a mixture of particulate matter, carbon monoxide and other toxic chemical entities, said device comprising an elongated hollow body having an atmosphere inlet end and an outlet end, said outlet end terminating in a mouthpiece so that said atmosphere can be inhaled by way of a human user's mouth sequentially through said inlet end, body and mouthpiece, said body comprising a plurality of zones for treating said contaminated air as it passes therethrough, one of said plurality of zones is a carbon monoxide removal and fixation zone being adapted to remove and fix said carbon monoxide and another one of said plurality of zones is a toxic chemical reaction and fixation zone adapted to chemically react with said other toxic chemical entities having a porous support material impregnated with reaction chemicals for conversion of said toxic chemical entities and a liquid to solid defined compounds and to liquid non-volatile defined compounds which remain fixed to said support material, whereby said contaminated air can be purified sufficiently to allow breathing of same by said human user for a predetermined short time period.