BV is the most common vaginal infection among women, twice as common as thrush. However, 2 out of 3 women with BV mistake it for thrush because they don't know how to recognize the symptoms. BV Symptoms: Fishy smell, thin, watery and greyish white discharge, occasional discomfort. Thrush Symptoms: No smell, thick, white, curd-like discharge, intense itching or burning, redness and irritation around the vulva.