The breathing corpse

This story is about the original SCP-048 now known as the breathing corpse. Deemed this for it breathes when you get within 5 meters of it and you will start to experience loss of breath,feel lightheaded, and dizzy with every step. it has been known that 3 SCP-Agents have died while researching its body and so being that it must be kept in a 7 *7*7 meters the extra precautions needed for reasons the scp foundation has yet to release on the matter.