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Scentee is a small dongle that attaches to your smartphone and emits scents depending on your choosing. The first incarnation of this bizarre mobile phone accessory has a scent cartridge inside which holds enough liquid for 100 or so sprays.
The current scents available today are rose, coffee, lavender, strawberry, and rosemary. An Android phone or an iOS device with the right application controls what scents are emitted and when. These scent emissions could be used as an alternative to audio or tactile notifications.