engagement between the two slides 18 and 19 in particular the image vanes 90 a 90 b and 102 a through 102 c of the moving slide 19 are emerged switching their positions with their counterparts in the still slide 18 the junctions between the image vanes and the crossbeams limit the leftward travel of the moving slide 19 for example in fig5 the vane 102 b in the middle of the moving slide 19 has a neck 116 that connects the vane 102 b to its crossbeam 110 not visible and will cross an opposing neck 117 formed on the vane 60 b in the middle of the still slide 18 when the leading edge 112 of the moving vane 102 b slides over the trailing edge 70 of the still vane 60 b as shown in fig7 the crossing of the necks 116 and 118 is ensured due to the position of the vane 102 b over the front surface of the vane 60 b as opposed to the crossbeam 110 positioned under the rear surface of the vane 60 b fig8 is an exploded front view of a second embodiment of the present invention wherein an aroma visual message carrier 200 comprises a main sheet 211 a rotary image changing segment 212 a cover panel 230 and a sleeve insert 242 the main sheet 211 is made by punching a single elongated sheet material to have a smaller end panel 214 that is generally circular but has rectangular proximal edges connected to a slightly bigger back panel 216 at a vertical line 217 along which the two panels 214 and 216 are.