it could be glandular. does it smell like just normal sweat or does it have a strong odor.. like if you sweat due to heat or excercise it has a certain smell, and when you sweat due to anxiety, stress, etc, it has a much stronger smell, which is also the type that's more likely to stain clothes. i heard this a while back, i can't remember where. but anyway depending on how you sweat it could be a glandular or stress/anxiety related problem, that can probably be controlled somewhat. if it's really bothering you go see a dr. about it and see what they can suggest
"The greatness of a nation and its moral progress can be judged by the way its animals are treated"
~ Gandhi