Why does my sweat smell dif..

I had abdominal surgery and ever since my armpit sweat smells completely different than before. The surgery was 6 weeks ago.

Its from the anesthesia. Depending on how much you got it could take up to a year to get out of your system. You may find that some other things go kind of funny with your body. Dont worry, it will go back to normal after a while.

Maybe your body's still draining all the strange fluids you got because of the medicine...

You are probably sweating out the chemicals used during the surgery. Pops

This is do to the drugs in your system, also it can be your detoxing the antibiotics&the druds. This will make your sweat smell sour.