To dream of having B.O. (body odor) suggests you are experiencing some overwhelming anxiety, stress, fear, or nervousness in your life.
The dream may be a reminder that in order to achieve your goals, you will have to put in a lot of effort and struggle. This dream is also common when the dreamer is sick, especially with a cold or the flu.
If somebody else has B.O. in your dream, you might have hand to stand up for yourself recently in an uncomfortable situation. Or, a certain unpleasant memory is trying to come to the forefront.... My Dream Interpretation
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)... Islamic Dream Interpretation
To dream of an unpleasant odor predicts anxieties which could be major or minor (depending on how bad the dream smell is). Also, to smell something in your dream often indicates your past experiences and feelings with that particular smell. Your dream may be trying to convey a feeling to you by associating it with a familiar smell.... My Dream Interpretation