@myremih: 1. Replace your underwear after every 6 to 12 months; you should not celebrate birthdays for them. 2. Sleeping on underwear can trap moisture more than it adds comfort. 3. Tight underwear doesn't shape your body; it restricts your skin and airflow. 4. Wearing a flesh pair of underwear daily isn't too much; it is basic hygiene and self-respect. 5. If you can perceive the smell, you already know the answer; wash again. 6. Change damp underwear as soon as possible to help reduce moisture and skin irritation. 7. Wash underwear with mild soap or detergent and let it dry completely before wearing it again.