1. Using the Same Towel for Too Long
A towel may feel clean because it dries you after a shower, but it also absorbs moisture, skin cells, and whatever remains on your body.
If it stays damp for long periods, it can develop an unpleasant smell.
A better habit
Hang your towel fully open so it can dry quickly rather than leaving it in a heap.
Wash towels regularly and replace them when they remain musty even after washing.