Please advise me!

What would you do?

I met a few weeks ago, a really gorgeous girl and we really like each other. Not only is she hot but she also has a great outlook and personality.

The problem is on Sunday we were making out and things got steamy in the car after a dinner date. We were parked outside her apartment but I couldn't go up as I had a 4am shift on Monday morning.

As we were making out, I fondled her down below and discretely did the "finger test" sniff.

To my surprise, her nether regions smelt really odorous!
She is a very clean girl but is "heavily scented"

I'm now worried and anxious about having relations with her and having to perform oral sex. I normally like to do it but her "front bottom" is too fishy...almost mackerel smelling.

The dilemma is if I avoid giving her "oral pleasures" she's going to wonder what's wrong and I don't know how to say it!

But if I do the deed on her, I might become disgusted and end up terminating a potentially awesome relationship with a beautiful girl...

I just don't know what to do. Has anyone else ever been in a similar situation?

To the women reading this, how would you like a guy to approach this sensitive subject tactfully but with honesty?
Also, if you've had this problem with your "ladygarden" how did you fix it?

Please help me!