Sure but it gets taped down and such when your under and you are not worried about air getting in as much as so much aneshteia getting out that it will be to low a dosage. With nitrogen you don’t want oxygen extending out your awareness or triggers from soemthing like co2. You more worried about it getting in. Then also it just gets to a level of being tussed up which can wierd you out. I mean if you had to but I think the coffin/pod thing is a good compromise of comfort and being able to feel ate ease along with assurance on function.