A freshener device includes a clip, a carrier, and a carrier retainer. Thecarrier isprovided with odor emitting substances, odor eliminating substances and/orincest repellent.The carrier retainer secures the carrier to the clip, and the clip may be usedto secure thedevice to an ancillary object so as to expose the carrier for controlling odorwithin a region ofspace near the ancillary object. Some embodiments enable removably securingthe device toat least one air-directional controller exhaust vent louver of a vehicle airconditioning unit tocontrol odor within the passenger compartment of the vehicle. Otherembodiments enableinterchangeable and replaceable components to provide various utilitarian andaestheticfeatures.