A freshener device includes a clip, a carrier, and a carrier retainer. The carrier is provided with odor emitting substances, odor eliminating substances and/or incest repellent. The carrier retainer secures the carrier to the clip, and the clip may be used to secure the device to an ancillary object so as to expose the carrier for controlling odor within a region of space near the ancillary object. Some embodiments enable removably securing the device to at least one air-directional controller exhaust vent louver of a vehicle air conditioning unit to control odor within the passenger compartment of the vehicle. Other embodiments enable interchangeable and replaceable components to provide various utilitarian and aesthetic features.
