| 摘要 |
In one embodiment, the invention is directed to a device that includes a holding mechanism for substantially concurrently and releasably retaining two containers. In one embodiment, the invention is directed to a first container having a first volatile composition and a second container having a second volatile composition where the first and the second containers are operably connected to each other to form a cartridge. In one embodiment, the invention is directed to a method of emitting a first and a second volatile composition.
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