This would be a good question for the commuter forum. Unfortunately, I am of no help since I lost weight and do not sweat as much. In fact, I rarely even cleanup from the 14 mile commute in. The 28 mile commute requires that I clean up a few stinky parts with wet paper towels.
From what I understand, smelly sweat is caused by bacteria. What you can do with that info, I have no clue.
Sorry.