MSM (AKA: methylsulfonylmethane, methyl sulfonyl methane, DMSO2) increased my body odor at 1.8g 3 times a day. It was a significant increase. I would say normally (no intense sweating) what would take about 3 days of no showering to reach a certain stench took about 15 hours while taking MSM. On a hot day I would reach offensive stench levels in about 2 hours when normally it would take about 1.5 hot days in a row to reach that level. It was a different kind of odor, much like the way MSM smells. I advise not using MSM if you want to smell good.