Please go to your doctor and report your symptom. Changes in body odor can indicate an underlying disease, for example, diabetes. Please get checked out right away. Don't be embarrassed to tell your doctor--this will be an important clue for him/her to make a diagnosis.
Some examples of odors associated with diseases:
http://faculty.washington.edu/chudler/news710.html
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Disease: odor
-------- ----
Typhoid: Freshly baked brown bread
Diphtheria: Sweet
Smallpox: Stench (a foul odor)
Yellow fever: Butcher shop
Scurvy: Putrid (a rotten odor)
Phenylketonuria: Musty; sweaty locker room
Metabolic disorders: Maple syrup
Diabetic ketosis: Fruity aroma; decomposing apples
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