In linguistics, rhinoglottophilia refers to the connection between laryngeal (glottal) and nasal articulations.
[1][2] There is a connection between the acoustic production of laryngeals and nasals, as can be seen from the antiformants both can produce when viewed via a spectrogram.
For laryngeals, the space below the glottis acts as a second resonator, which in turn can produce slight antiformants.
[3] Rhinoglottophilia may have occurred historically in the development of Inor, one of the Gurage languages.
[5] Similar processes have also been reported for Irish,[6] Basque,[7] North-Central Hlai[8] and in Nyole, where Bantu *p appears as /ŋ/ rather than as /h/ as in other Luhya dialects.