What causes vaginal oder, like sewer gassed? no discharge

Odor: Vaginal odor may vary throughout your menstrual cycle and may be especially noticeable right after having sex. Normal sweating also can cause a vaginal odor. Though it may be tempting to douche or use a vaginal deodorant to decrease vaginal odor, these products may actually increase irritation and other vaginal symptoms.Generally, if you have vaginal odor without other vaginal symptoms, it's unlikely that your vaginal odor is abnormal.