A system includes a portable source of gaseous chlorine dioxide (CD) to be generated within an isolated chamber or tent structure enclosing the device to be treated. A portable scrubber has first sourced couplings for sealingly connecting to a scrubbing flow path comprising at least one gas conduit for removing the CD from the device enclosed within an isolated chamber or tent structure. The gas conduit may have second couplings for connecting the device or isolated chamber or tent structure to the scrubbing flow path by way of a connection panel to complete a closed, filtered gas loop.