Regular wheat flour is banned in my house although it's just my son and I. I have Celiac he doesn't (yet) The reason is that when you are mixing pancakes, cake, anything really, the dust from the flour can stay in the air as long as 4 hours which inhaled flour is just as bad for a person with Celiac as eating it. So we buy my son regular bread from the bakery and he has to not double did the knife in butter, peanut butter etc.. I make gluten free baked goods and he likes then as much or better than the regular kind. Even my friends that are not gluten free ask me to bring cupcakes or cookies to get togethers So once you've been in this a while it will get easier. In the meantime, if they want pancakes you can buy a mix that is in a bottle that they just add water or milk to and then it would be contained in the bottle so it may not get as much in the air. Just a thought. It is nice that my son is able to do gluten free with me except for his bread and an occasional pack of cookies. It makes life a lot easier. He likes brown rice pasta so we're good there. My older son and family will be here to visit for a week tomorrow and they have the same rules when it comes to cross contamination. They are vegetarian and I don't sprinkle meat juice on their food Good luck
Just found this: The problem is that when you breath it in through your mouth and nose, those particles of flour can become trapped in your saliva and mucus and then be swallowed. At that point it enters your digestive system. The Gluten Intolerance Group says that flour can hang in the air up to 24 hours. That’s a long time.