The number of apocrine glands is different in various races. The fewer apocrine glands the less sweating and odor. Black people have a higher number of apocrine glands, Japanese have fewer and so does the Asian.

Remember, glands work at night the same as they do in the daytime.

Diabetes can cause a smell of acetone (nail-varnish remover).
Liver disorders may smell like ammonia.
Yeast infections can smell like beer.
Digestive can smell, but, is due to gas.
Fever makes people sweat more and cause odor.
Night sweats can be due to T.B.
Malaria and cancers such as leukaemia or lymphoma can cause sweats.
Some anti-psychotic medications, morphine, high doses of hormone thyroxin and overdoses of analgesics such as aspirin, acetaminophen (Tylenol, etc) are known to casuse body odor.
Anxiety will cause sweating during arousal even in tiny amounts.
Heredity may be a cause of sweating more than others.

You would be wise to get a second opinion.