Les amafutha abalulekile akha izwe elihle, elakhiwe ngamaphunga namakha azo zonke izinhlobo, zemibala.. Ama-olfactory receptors ethu ayakwazi ukubona inani elikhulu kakhulu lamaphunga futhi adlulisele ulwazi ebuchosheni. Iphunga lamafutha abalulekile, njenganoma yiliphi elinye iphunga, lifinyelela ama-olfactory bulbs futhi lidlulele ngqo ku-hypothalamus, indawo yobuchopho elawula, phakathi kwezinye izinto, i-homeostasis, imizwa yendlala nokusutha kanye nokuziphatha. .
I-Olfaction ingenisa ulwazi olucashile oluvela endaweni yethu. Isenzo sokuqala sokuphila kwethu, ukuphefumula kusihlanganisa nomhlaba ngaso sonke isikhathi sokuphila kwethu. Ukushintshisana okuqhubekayo: Simunca ingxenye yalo mhlaba ngesikhathi sokuphefumulelwa, futhi ngokuphefumula ngakunye sinikeza ingxenye yethu.