Islamic Interpretation of Dreams (Ibn-i Sirin):
Smelling a bad odor in a dream means hearing bad words, or it could mean distress.
Smelling odor that emanates from under the armpit in a dream means headache, nasal congestions, cold, or hearing bad news, divulging secrets, dispelling rancor and jealousy, or it could mean relaxing after an exhausting workday, contracting an eye disease, or it could mean loathsomeness.
If a child smells such an odor from under his armpit in his dream, it means that he has reached his puberty, or it could mean an illness or an accident that could take away his life.
(Also see Cloud of smoke; Perspiration; Smell)