Fragrance delivery system

1. An aircraft comprising:

a fuselage defining a cabin interior, wherein the cabin interior includes at least first and second zones, and

an environmental control system that includes

a source of air, wherein air flows between the source of air and the cabin interior along an airflow path,

a mixer unit in airflow communication with the source of air and positioned downstream from the source of air in the airflow path,

at least first and second air ducts positioned in the airflow path between the mixer unit and the cabin interior,

a first fragrance dispensing unit positioned between the mixer unit and the cabin interior, wherein the first fragrance dispensing unit is configured to dispense a first fragrance into the first duct along the airflow path and into the first zone, and,

a second fragrance dispensing unit positioned between the mixer unit and the cabin interior, wherein the second fragrance dispensing unit is configured to dispense the first fragrance or a second fragrance into the second duct along the airflow path and into the second zone.

2. The aircraft of claim 1 wherein the first fragrance dispensing unit includes a scent assembly that contains a first fragrance oil that comprises the first fragrance.

3. The aircraft of claim 2 wherein the first fragrance dispensing unit is configured to selectively dispense at least first and second fragrances into the airflow path.

4. The aircraft of claim 1 wherein the first fragrance dispensing unit is configured to dispense the first fragrance into the mixer unit.

5. The aircraft of claim 4 wherein the first fragrance dispensing unit includes a first fragrance cartridge therein that includes a scent assembly with the first fragrance therein, wherein the first fragrance cartridge includes a cover that is movable between a closed position and an open position, wherein the first fragrance is dispensed when the cover is in the open position.

6. The aircraft of claim 5 wherein the first fragrance dispensing unit includes a second fragrance cartridge therein that includes a scent assembly with a second fragrance therein, wherein the second fragrance cartridge includes a cover that is movable between a closed position and an open position, wherein the second fragrance is dispensed when the cover is in the open position.

7. The aircraft of claim 1 wherein the first fragrance dispensing unit is configured to selectively dispense at least first and second fragrances into the first duct, and wherein the second fragrance dispensing unit is configured to selectively dispense at least first and second fragrances into the second duct.

8. The aircraft of claim 7 wherein the first fragrance dispensing unit includes a first fragrance cartridge therein that includes a scent assembly with the first fragrance therein, wherein the first fragrance cartridge includes a cover that is movable between a closed position and an open position, wherein the first fragrance is dispensed when the cover is in the open position, wherein the first fragrance dispensing unit includes a second fragrance cartridge therein that includes a scent assembly with the second fragrance therein, wherein the second fragrance cartridge includes a cover that is movable between a closed position and an open position, wherein the second fragrance is dispensed when the cover is in the open position.

9. The aircraft of claim 1 wherein the fragrance dispensing unit is in electrical communication with an electrical control unit, wherein the first fragrance dispensing unit is configured to selectively dispense the first fragrance based on instructions from the electrical control unit.

10. The aircraft of claim 9 wherein the electrical control unit includes a human machine interface, and wherein the instructions can be provided via human input.

11. An aircraft comprising:

a fuselage defining a cabin interior that is divided into at least first and second zones, and

a fragrance delivery system disposed in the cabin interior, wherein the fragrance delivery system includes

a first fragrance dispensing unit that is positioned in the first zone, wherein the first fragrance dispensing unit includes a first fragrance cartridge that includes a first scent and a second fragrance cartridge that includes a second scent,

a second fragrance dispensing unit that is positioned in the second zone,

a first electronic control unit in communication with the first fragrance dispensing unit,

a second electronic control unit in communication with the second fragrance dispensing unit, and

a human machine interface in communication with the first and second electronic control units,

wherein the first fragrance dispensing unit is configured to selectively dispense either the first fragrance or the second fragrance.

12. The aircraft of claim 11 wherein a third fragrance dispensing unit is positioned in the first zone, and wherein the third fragrance dispensing unit is in communication with the first electrical control unit.

13. The aircraft of claim 11 wherein the first fragrance dispensing unit includes a first fragrance cartridge therein, wherein the first fragrance cartridge includes a first near field communication portion that includes information related to the first fragrance cartridge, wherein the first near field communication portion is in communication with a receiver in the first fragrance dispensing unit, and wherein the information related to the first fragrance cartridge is communicated to the human machine interface.

14. A fragrance dispensing unit comprising:

a housing that defines an interior and includes at least one intake opening and at least one outlet opening, wherein an airflow path is defined between the intake opening and the outlet opening,

a fan positioned along the airflow path,

at least a first cartridge positioned along the airflow path, wherein the first cartridge includes a cover that is movable between a closed position and an open position, wherein the first cartridge includes a scent assembly, wherein the scent assembly is not in flow communication with the airflow path when the first cover is in the closed position, and wherein the scent assembly is in flow communication with the airflow path when the first cover is in the open position, and

a first fragrance module, wherein the first cartridge is removably received in the first fragrance module, and wherein the first fragrance module includes a rotatable portion that is in engagement with the first cartridge, and wherein rotational movement of the rotatable portion moves the cover of the first cartridge between the open and closed positions along a linear path.

15. The fragrance delivery unit of claim 14 , wherein the first cartridge includes a near field communication transmitter therein that includes information about the first cartridge therein, wherein the first fragrance module includes a near field communication receiver for receiving the information about the first cartridge.

16. The fragrance delivery unit of claim 15 further comprising a second cartridge positioned along the airflow path, wherein the second cartridge is removably received in a second fragrance module, wherein the second cartridge includes a cover that is movable between a closed position and an open position, wherein the second cartridge includes a near field communication transmitter therein that includes information about the second cartridge therein, wherein the second fragrance module includes a near field communication receiver for receiving the information about the first cartridge.