Hey. You are what you eat. lol As for your g/f's smell, try something like this.
Since you guys are intimate, rather then making her feel bad about the smell by telling her, take a shower with her before you guys get intimate. Wash her yourself. It's both intimate and it will assure you that she really is clean. Remember though, womens secretions have a natural smell to them. It shouldn't be extremely strong though or taste horrible. It also changes during the course of the month due to hormones.
Good luck!
"We can live like Jack and Sally if we want.
Where you can always find me
And we'll have Halloween on Christmas
And in the night we'll wish this never ends
We'll wish this never ends..."