A vapor-enhancing apparatus for an electronic vapor smoking article, comprising: a filter material; a tubular housing defining a lumen, and having a mouth-engaging end (511, 630B) and a longitudinally-opposed component-engaging end, the lumen being configured to receive the filter material therein, and the component-engaging end being adapted to operably engage a control body portion having one or more indicators providing indices of operation associated with a vapor produced by the electronic vapor smoking article and the component-engaging end being adapted to receive the vapor therethrough; and a vapor-enhancing element operably engaged with the filter material and configured to enhance the vapor drawn through the filter material within the lumen, and through the mouth-engaging end (511, 630B), by application of suction to the mouth-engaging end (511, 630B) of the housing, CHARACTERIZED IN THAT one of the housing and the filter material comprises an indicia configured to be indicative of one of: a remaining service life of the enhancement of the vapor drawn through the filter material, provided by the vapor-enhancing element; and an expended service life of the enhancement of the vapor drawn through the filter material, provided by the vapor-enhancing element; and that the indicia is selected from the group consisting of a colored filter material configured to fade as the service life of the vapor-enhancing element is expended, a gradated level associated with the housing and including a series of markers configured to successively fade or disappear as the service life of the vapor-enhancing element is expended, and a numerical indicia associated with the housing and configured to increase in number as the service life of the vapor-enhancing element is expended. a filter material; a tubular housing defining a lumen, and having a mouth-engaging end (511, 630B) and a longitudinally-opposed component-engaging end, the lumen being configured to receive the filter material therein, and the component-engaging end being adapted to operably engage a control body portion having one or more indicators providing indices of operation associated with a vapor produced by the electronic vapor smoking article and the component-engaging end being adapted to receive the vapor therethrough; and a vapor-enhancing element operably engaged with the filter material and configured to enhance the vapor drawn through the filter material within the lumen, and through the mouth-engaging end (511, 630B), by application of suction to the mouth-engaging end (511, 630B) of the housing, CHARACTERIZED IN THAT one of the housing and the filter material comprises an indicia configured to be indicative of one of: a remaining service life of the enhancement of the vapor drawn through the filter material, provided by the vapor-enhancing element; and an expended service life of the enhancement of the vapor drawn through the filter material, provided by the vapor-enhancing element; and that the indicia is selected from the group consisting of a colored filter material configured to fade as the service life of the vapor-enhancing element is expended, a gradated level associated with the housing and including a series of markers configured to successively fade or disappear as the service life of the vapor-enhancing element is expended, and a numerical indicia associated with the housing and configured to increase in number as the service life of the vapor-enhancing element is expended. a remaining service life of the enhancement of the vapor drawn through the filter material, provided by the vapor-enhancing element; and an expended service life of the enhancement of the vapor drawn through the filter material, provided by the vapor-enhancing element; and that the indicia is selected from the group consisting of a colored filter material configured to fade as the service life of the vapor-enhancing element is expended, a gradated level associated with the housing and including a series of markers configured to successively fade or disappear as the service life of the vapor-enhancing element is expended, and a numerical indicia associated with the housing and configured to increase in number as the service life of the vapor-enhancing element is expended.