is hinged 404 and can be lifted to insert or remove an air filter pack 410 which may be an assembly consisting of a particulate filter material on the outside and a carbon activated material on the inside the perimeter edge 416 of air filter pack 410 is trapped between the downwardly facing radial rib 414 and the ledge 412 inside filter housing well 408 thereby creating an air tight seal and forcing air entering the personal air filter device to pass through the air filter pack 410 fig1 shows an alternate embodiment of the personal air filter device 500 where the air filter holding member 502 is just behind the user 39 s ear and the air tube 504 rests on the top portion of the user 39 s ear where the ear meets the head this configuration helps balance the weight of the entire assembly so that the weight of the air tube going to the user 39 s mouth and the weight of the air filter holding member are approximately equal fig2 shows another alternate embodiment of the personal air filter device 600 where a single flexible air tube 602 is used in place of the telescoping tube configuration shown in the previously described embodiments this configuration 600 produces cost savings in comparison to the previous embodiment fig2 shows a plan view of another embodiment of the device 700 where a.