What to do to get rid of vaginal odor? must be a bacteria, right?

Odd Odors: Some vaginal odor is very normal. Foul odor with or without a discharge is often due to some abnormal process. Underlying infection from resident bacteria, yeast or fungi is a common culprit, however foreign bodies can cause odor such as a retained tampon or frequent use of sex toys which cause microtrauma and swelling. Tumors can also cause foul odor which is why a regular exam is important.