Ukuqapha isimo esiqhubekayo
Ekuqapheni okuqhubekayo kwesimo, umoya wangaphakathi wendawo ubhekwa ngosizo lwezinzwa. Izinzwa zihlala ziqapha izakhiwo:
- izinga lokushisa
- umswakama ohlobene
- inani le-carbon dioxide
- inani lama-organic compounds aguquguqukayo kanye nezinhlayiya ezincane
- umehluko wengcindezi phakathi kwezakhiwo nomoya wangaphandle.