Well, you are half right. However, expecting a woman to get up, inconvenience herself with having to move to another room to fart, all because of your delicate sensibilities and concept of "being decent", is not intimacy. That is you feeling too "proper" to be intimate with someone because God forbid she be human and have normal bodily functions.
If you were alone in a room and needed to fart, would you get up and move to the bathroom to do so? Because that would only be "decent" right? Or do you acknowledge that, within your own home, you should be comfortable to do as you would were you alone? In that case, you are acknowledging you dont have much intimacy with your SO.