Umbefu uyingxaki ephefumla eyokuba izigidi zibulaleka ehlabathini lonke. Abo banombefu baneempawu ezifana nokukhohlela okukhulu, amavili, ubunzima bokuphefumla kunye neentlungu zesifuba. Ingxaki inokuza nakweliphi na ibakala ebomini nakwabantwana abancinane yaye ngoku ayikho ichiza lokusinyanga.
Ziliqela unyango lwemveli lombefu olufana nolwamayeza anikwa ngugqirha kunye neenguqu kwindlela ophila ngayo. Kodwa abanye abantu bafumene ukuba i-cannabis ikwazi ukudambisa iimpawu njengoko isebenza njengebronchodilator, nto leyo encedisa umoya ovulelekileyo ukuba avule baphumle. Ngelixesha ezinombefu omandundu azinakunqwenela ukutshaya cannabis, zininzi ezinye iindlela ezinokuthathwa ezinjengomphunga. Apha ungahlola uluhlu olupheleleyo lweentsinga zecannabis ezinceda ukunyanga umbefu.