I would say, shower up good before going to minimize bacteria, dress as light as possible with scent killer sprayed on, and bring new clothes as you suggest. I don't think sweating alone will produce the scent as much as bacteria that then works on the sweat. The article at
http://www.medicalnewstoday.com/articles/173478.php says this anyway. So if you minimize bacteria, and then get rid of the sweat by toweling off good and putting clean clothes on, scent should not be a big problem.