I-nebulizer yokucindezela umoya yenzelwe ukuphumelela ukwelashwa kwe-asthma, izifo zomkhuhlane nezinye izinkinga zokuphefumula. Idala umoya ohamba ngomgudu womoya ocacile uye esitsheni semithi. Lapho umoya ungena esitsheni semithi, uzoguqula umuthi owabelwe ube yinkungu ye-aerosol ukuze kube lula ukuphefumula.