@trents thank you for that information. My parents feel that cooking flour in toaster isn't a thing as its already cooked product before made? but Airbourne particles is my fear. Like I have had symptoms from 6 meters away had to leave massive migraine.
Yes, except for the most sensitive, cross contamination from airborne gluten should be minimal.
Highly sensitive people may have nutritional deficiencies. Many times their bodies are in a highly inflamed state from Celiac, with high levels of histamine and homocysteine. Vitamins are needed to break down histamine released from immune cells like mast cells that get over stimulated and produce histamine at the least provocation as part of the immune response to gluten. This can last even after gluten exposure is ended. Thiamine supplementation helps calm the mast cells. Vitamin D helps calm the immune system. Other B vitamins and minerals are needed to correct the nutritional deficiencies that developed while the villi were damaged and not able to absorb nutrients. The villi need vitamins and minerals to repair themselves and grow new villi.
Focus on eating a nutritional dense, low inflammation diet, like the Autoimmune Protocol Diet, and supplementing to correct dietary deficiencies. Once your body has the vitamins and minerals needed, the body can begin healing itself. You can have nutritional deficiencies even if blood tests say you have "normal" blood levels of vitamins. Blood is a transport system carrying vitamins from the digestive system to organs and tissues. Vitamins are used inside cells where they cannot be measured.
Please discuss with your doctor and dietician supplementing vitamins and minerals while trying to heal.
Should not be a problem except for the most sensitive celiacs. The amount of gluten that would get in the air from cooking alone has got to be miniscule. I would be more concerned about cross contamination happening in other ways in a living environment where others are preparing and consuming gluten-containing foods. Thinks like shared cooking surfaces and countertops. And what about that toaster you mentioned?