wearable devices for dispensing insect repellents , fragrances , and / or other chemicals along the outside of the clothing of a human are disclosed . they are of the type that are clipped onto a belt or the like , and use a powered fan to dispense active . they are configured with fan rotor arrangements to minimize power use while still achieving acceptable air flow rates . these changes permit use of smaller batteries and more compact arrangements for battery positioning . this in turn permits a much more compact and lightweight construction to achieve the desired results . the devices are also provided with a rotatable clip structure to render use of the device more comfortable when the user is seated and to provide greater control over the direction of the dispensing . further , they are provided with modified lids to facilitate active refill replacement .