↑ “Indogermanisches Etymologisches Wörterbuch”, J. Pokorny, 1959, Bern: Francke
Etymology
Origin disputed. Either from Proto-Indo-European*u̯ēp, *u̯ǝp 'to blow; to soar' (compare Latin vapor(“steam”), Sanskrit वापयति(vāpayati, “makes blow”)) or from Proto-Indo-European*kēwp-, *kwēp-(“to smoke, boil”), (compare Lithuanian kvapas(“scent, smell, fume”), Latvian kvepét(“to smoke”), Gothic 𐌰𐍆𐍈𐌰𐍀𐌾𐌰𐌽(afƕapjan, “to suffocate”), Middle High German verwepfen, Icelandic hvap(“dropsical flesh”))[1].
Alternatively from Old Italian vapa. If the word vohë is actually another form of the same word, the current proposed etymologies would completely be dismissed