PepsiCo-backed German start-up brand air up is seeking the sweet smell of success as it launches its “scent-flavored hydration system” products online in the U.S. this summer. Founded in 2019, air up produces a line of refillable water bottles and scented “flavor” pods that enhance plain water by tricking the brain into perceiving taste through smells – a concept the company refers to as “retronasal smell.”
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