If the leucorrhea is odorous and accompanied by vulvar itching, the following causes are common: a. Bacterial vaginosis, which is characterized by odorous vaginal secretions and occasional vulvar itching. Mixed infection, that is, bacterial vaginosis and Candida infection, is characterized by odorous vaginal discharge and severe vulvar itching, which causes local congestion and edema. In daily life, you should change your underwear regularly and keep your vulva clean to reduce the chance of infection.