Why can a woman’s private area smell bad

A woman’s private area can smell “bad” due to normal bodily functions (sweat, menstrual cycle, diet, sex) or infections like Bacterial Vaginosis (BV) (fishy smell), yeast infections (sour/yeasty), or STIs (trichomoniasis), often accompanied by itching, burning, or unusual discharge, but persistent or strong odors with other symptoms need a doctor’s attention for proper treatment like antibiotics or antifungals. 
Common & Normal Causes (Temporary)
  • Menstrual Cycle: Blood has a distinct smell.
  • Sweat & Moisture: Heat and tight clothing trap sweat, changing scent.
  • Diet: Certain foods (garlic, onions, asparagus) can alter smell.
  • Sex: Semen and arousal fluids can temporarily change the scent. 
Causes Requiring Treatment (Infections/Conditions)
When to See a Doctor
Consult a healthcare provider if the odor is strong, persistent, or accompanied by:
  • Unusual discharge (color, texture).
  • Itching, burning, or redness.
  • Pain during urination or intercourse.
  • Fever or unusual bleeding