If, in addition, a crewmember has been drinking alcohol, smoking, is overtired or chilled, or if there is a musty odor in the cabin, the result is virtually preprogrammed.
Ukubangaba, ukengeza, umsebenzi ebesela isiselo esinxilisayo, elshaya, udiniwe okanye uyagodola, okanye ukuba kukho ivumba elibi kwigumbi lokulala, iziphumo sezihlelwe kwangaphambili.