Yeah, words are a very interesting field to research.
Eric Berne the great USA psychologist spoke of " pristine words" words that were coined in the infancy and those words have odour.
Strange conclusion of a true master.
I should say that "ura" is also " vagina" and it appears in the nice name of the Miss -ouri ( n) River.
Appears in the Urales name. in Mihura ( bull) in Mauries polynesian, Arabian huries and perhaps in Ura-anus.
Probably interjections from amazing views.