It is relatively common to have an odor during ovulation. During ovulation, a woman's vaginal discharge will become heavier and may have a slightly sour smell. These changes usually appear in the days leading up to ovulation and peak on the day of ovulation. However, some people may experience discomfort or an odor.

1. Vaginal flora imbalance: If the vaginal flora is imbalanced, vaginal odor may occur. This condition can usually be resolved with antibiotics or frequent use of sanitary pads.

2. Bacterial infection: If the vagina is infected by bacteria, it may cause odor. This condition can be resolved with the use of bacterial infection treatment medications.

3. Sexual activity: Sexual activity may cause vaginal inflammation or infection, which can cause odor.

4. Other factors: There are other factors that may cause ovulation odor, such as vaginal dryness, allergies or drug reactions.

Although ovulation odor can be uncomfortable, most cases do not require treatment. If you feel unwell, it is recommended that you consult your doctor to understand your specific situation and obtain appropriate advice.