Ikhwalithi yomoya: Kuhle
Izinhlayiya ziyizinhlayiyana ezingaphansi kwama-micrometer angu-2.5 ububanzi ezingangena emaphashini nasegazini, okubangele izinkinga ezinkulu zempilo. Imiphumela emibi kakhulu isemaphashini nasenhliziyo. Ukuchayeka kungaholela ekukhwehleleni noma ekuphefumuleni kanzima, isifuba somoya sibe sibi kakhulu kanye nesifo sokuphefumula esingamahlalakhona.