The fishy small sweety79 is also talking about can be caused by a yeast infection.
fishy smell is an infection called bacterial vaginosis. everyone has a natural smell, but if it is foul then thats not normal.
The "smell" you have is natural. If she cleans her vagina and both of you are in good health then I wouldn't worry about it. All people have different "smells" ... I've had women who smell like cherries and some who smell like fish during intercourse.
One question - do you have protected sex? If so, that smell can be natural reaction to the latex in the condom. Or if you use sheepskin condoms those have a very characteristic smell that I personally couldn't get used to. As always, if she feels irritated or painful after sex check the vaginal area for irritation, she may be allergic to latex.
But the best solution is to talk to her about it. If you two can talk about this topic, that is a hallmark of many a successful couple. Communication is key. If you're worried about insulting her or hurting her feelings, be nice about it. Good luck!