Personal containment system with sealed passthrough

A personal containment system (20) comprising: a barrier (22) generally fluid impermeable with an inner surface (24) defining an inner environment (28) that can surround a user of the system (20) confining and an outer surface (26) defining an external environment (30) which may contain one or more hazards; a system (32) air supply that can provide filtered air from the internal environment (30) external to the environment (28) comprising a replaceable filter (36) exposed to the external environment (30) and a fan (34) isolated in general the external environment (30) and in fluid communication with the filter (36) and an outlet (23) for supply of filtered air through the barrier (22) to the fan (34) providing the socket (23) a waterproof connection fluids in general to the barrier (22) and the fan (34) during filter replacement, wherein the fan (34) has a fluid inlet and outlet (23) is sufficiently fixed in position with respect to fan (34) so ​​that the inlet remains accessible during the removal and replacement of the filter (36) despite movement or other disorder of the system while the filter is disconnected.