Never seen it used as a name. No doubt because where I live, it's a dictionary word meaning 'house', and it used to be used for the kind of outdoor long-drop toilet that was installed in its own little outhouse, well away from the farmhouse. Not any more, I don't think - and anyway it was shortened to PK, standing for picannini kaia or little house. But it's not a dainty or a fragrant connotation.
Here, it sounds like KIE a, with the IE as in
Simon. And
Kai in
German has the same sound.