Yeast infections are caused when a yeast called candida overgrows and overtakes the normal vaginal flora. Yeast infections usually occur when lubrications, spermicides, antibiotic use, or even pregnancy allow the normal amount of yeast in the area to overgrow. Since warm and wet environments are a good place for yeast to grow, you can also get yeast infections from working out and sitting in your sweaty underwear or wearing a wet bathing suit. The vaginal discharge looks like cottage cheese. It can be so thick that you might notice a thick white coating in and around your vagina. Most yeast infections can be cured with OTC anti-fungal medications. If this smell persists and you have other risk factors associated with diabetes, it is recommended you see your healthcare practitioner.