of the atomization baffle 50 and fall back into the fluid reservoir region 90 of the internal volume 70 a second embodiment of a nebulizer generally referred to as 100 constructed and operative according to the teachings of the present invention is illustrated in fig1 15 the operational principles of this second embodiment are the same as the first embodiment described above therefore structural elements effecting the operation are similar to the first embodiment and therefore are numbered accordingly the differentiating feature of this second embodiment is the sloping bottom 102 of the lower housing 108 the sloping bottom 102 creates a region of liquid confluence 104 in the liquid reservoir 190 this allows more of the liquid 192 to be aspirated by the fluid passageway 142 which is configured with a bottom opening substantially corresponding to the lowest point in the reservoir that is the inside surface of the cylindrical wall of the upper housing has a groove extending upward from an area adjacent to the lowest point to the top of the wall and the outer surface of the cylindrical wall of the fluid passageway insert abuts substantially the rest of the inside surface of the cylindrical wall of the upper housing the sloping bottom also allows for proper operation of the nebulizer at varying orientations other than vertical in this embodiment the slope of the bottom is preferably 30 degrees from vertical and allows full operation of the nebulizer within a range of orientations between vertical and about 25 degrees from vertical in this second embodiment the lower extremities of each of the cylindrical walls of the upper housing 140 and fluid passageway insert 130 lie.