Inqanaba eliphezulu laseTshayina lokubulala iintsholongwane kwityhubhu yeventilator engalahlwayo eyenziwe ngulo mzi-mveliso yindlela esebenza kakhulu yokuphelisa iintsholongwane eziyingozi kwizixhobo zonyango.Le mveliso yenzelwe ukuba isetyenziswe ngetyhubhu ye-ventilator engalahlwayo kwaye ibonelela ngenkqubo ecokisekileyo yokubulala iintsholongwane eqinisekisa ukhuseleko lwezigulane kunye nabasebenzi bezonyango.