This mask allergy thing is strange. When we go into a shop, in spite of wearing the same make of mask, we find that within a few minutes my wife begins to hyperventilate and gets a bit panicky, whereas I don't notice it after a couple of minutes, in fact sometimes my wife has to tell me to take mine off when we get back to the car as I have forgotten that I have it on. I honestly feel that I could wear mine all day. Our daughter is like me and suffers no issues, whereas her husband (who has severe allergies), cannot wear one for more than a few minutes.
Mike.X