A.C.
Have you been taking any supplements or drinking any special tea to help your supply? The fenugreek contained in these supplements will often make your sweat and milk smell differently--sort of like maple syrup. Milk glands are actually just modified sweat glands...gross little fact, I know.
Also, your body chemistry changes during and after pregnancy. I rarely got stinky before I had my daughter...now if I forget the deodorant I MUST stop at the store on the way to work.
Congratulations on breastfeeding eight weeks! There will likely still be some ups and downs, but the hardest part is behind you.