###Human: Swaddle got undone and covered baby's face. Will this cause any brain damage? ###Assistant: Hi. If the child has reduced oxygen supply due to such an incident, it may lead to brain damage which will be manifested in a day or two post this incident as a convulsion. That is how you will come to know that this kind of event has taken place. When a baby rests over his face, the nose and mouth may become blocked which will lead to air hunger which causes hypoxia which may cause damage to the brain.