Jul 19, - Some vaginal odors can be a sign of an infection. Here are the ones you should look out for, and what they might mean. It is usually accompanied by a foul, fishy smell. Trichomonas: Trichomonas infection produces a frothy, yellow-green vaginal discharge with a strong odor. Vaginal yeast infection: A vaginal yeast infection is usually associated with a thick, white vaginal discharge that may have the texture of cottage cheese.Topic Guide · Trichomoniasis · Yeast Infection · Bacterial Vaginosis.