Hiù-kak hē-thóng (Eng-gí: olfactory system) sī leh chhú-lí hiù-kak (olfaction) ê ti-kak hē-thóng. Hù-sio̍k hiù-kak hē-thóng (accessory olfactory system) ē-tit kám-kak tio̍h ??? (pheromone). Hiù-kak hē-thóng kap bī-kak hē-thóng lóng sī kā hoà-ha̍k sìn-hō choán-tō (transduction) chò ti-kak (perception).

Jîn-lūi phīⁿ-khang lāi ê hìu-sîn-keng sī hiù-kak hē-thóng ê 1 pō͘-hūn.