But the smell
The site of period Blood doesn't bother me but sometimes the smell is just rancid
But the smell...
The smell? I'm suggesting having sex while your girl is on her period. I didn't suggest sticking your face in there and eating out the bloody axe wound.
If it's bad from just sex then crack open a window, put a peg on your nose, give a few sprays of John Paul Gaultier etc. Don't give up God like sex for something as minor as a smell.