Doesn't SHE realize she smells bad, or at least different than what she normally smells? It's wise for a woman on a regular basis to look at her genital area (anus, too) to see if she notices any changes (color, rashes, sores, bumps?), to put her finger in her pussy and then check the odor or taste to see if there are any changes, and notice if she is having any changes in discharge (more, different consistency, color, odor, burning, itching, etc.).

And like Cheyanne said, of course, you should be concerned about her as well as youself. I wasn't implying that you shouldn't be. However, I also wanted you to realize that it might not be just a matter of poor hygiene, and I didn't want you to also end up having to be treated for something (albeit minor) because you thought that bathing on her part would solve the problem.

What it boils down to is that she does need to get herself checked out to be sure she's OK before you have unprotected sex with her or she has unprotected sex with anybody. And although it would be hard for you to talk to her about it and probably embarrassing for her, I would hope that in the long run she'd be grateful that you are showing concern for her health, too.

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Communication is the key.