interjection, exclamation, breathe
噯 centers on vocal expression: an interjection or exclamation, and by extension the act of breathing out such a sound.
噯 combines 口 (mouth) with 愛, which likely contributes the sound, to express a vocal interjection or breath.
The mouth 口 on the left and 愛 on the right suggest a loving exclamation: imagine someone breathing out an affectionate interjection.
For アイ, picture an eye-catching interjection: eye -> アイ, and the mouth 口 breathes out the sound.
belch; eructation; burp