Abstract: A portable fragrant air delivery/diffuser system for spas/hot tubs and other self powered air producing devices comprising a portable vented container (FIG. 18 numeral 8), replaceable biodegradable filter (FIG. 18 numeral 6), multi-purpose removable cap (FIG. 18 numeral 5), vented bottom plate (FIG. 18 numeral 10) and an alternative use snap ring pivoting clip (FIG. 20g). The completely assembled unit, referred to as the Aroma Blast Unit (FIG. 18 numeral 12) is designed to fit into the aroma therapy chamber of newly manufactured spa/hot tubs FIG. 22 numeral 12) and to deliver natural plant derived oil fragrances to the therapy jet heads of said spa/hot tubs via the spa/hot tub's aroma therapy chamber and water boost pump plumbing (FIG. 22). Filter replacement is a simple process (FIG. 20d), thus providing the end user a means to choose from a variety natural plant derived oil fragrances to enjoy, or change as often as desired. The alternative snap ring clip (FIG.