I mean, it's human nature. I would ask what has she had to eat to see if this is going to continue for the rest of the night. Especially in the car, just roll the window down and/or spray some air freshener. It's not that big a deal. I look at it like she feels comfortable to be with me, which means that I'm probably going to hit that later on tonight.
Now if she farts while were fukking,,,,