Fanny Farting? Air? HELP

So, I am planning on sleeping with a lad I am seeing and every time I do doggy air comes out which sounds like a fart. I am comfortable and ready with him and have also discussed that.

I don't know if it's because I'm tight or what?

Could anyone help with ways to stop/prevent or make it less obvious as what it is?

(Doggy is one of my favourites so I can't not do it)