There are a few ways to eliminate, or reduce, body odor in the pubic area. First, make sure to clean on a regular basis, but do not use any harsh soaps or chemicals that will cause irritation or disrupt the natural balance. Second, you can use powder to soak up extra moisture in the area.
Third, make sure your clothing is not too tight so that air can circulate. Finally, make sure to change your clothes and wash them thoroughly, especially after exercising.