Item #: SCP-9139
Object Class: Safe
Special Containment Procedures: SCP-9139 is to be contained in a reinforced concrete measuring 5 m x 5 m x 5 m at site-██. No fewer than two level-2 personnel are to monitor the containment cell at all times to make sure no researcher ever touches SCP-9139. If anyone touches it, the Foundation alarms will start and 4 MTF Eta-10 must immediately head to the containment cell. (The alarms will not start if a test is in progress.)
Description: SCP-9139 is a 15 cm x 15 cm x 15 cm white box (colour: #fefdfe) that teleports whoever or whatever that touches it to a white space which looks infinite. When someone teleports into the white space, the person will no longer feel tired and cannot feel pain nor get hurt. The person will also no longer need food as the white space emits waves that make your stomach full.
In the white space, all air is replaced with 100% oxygen, causing your alveoli to fill with fluid making your breathing harder, slowly killing you and eventually die. (its better that you die earlier as the Foundation hasn't found a way to escape.).
So far, the Foundation has not found anything that can kill you except the air. Cameras and communication devices work in the white space, allowing the Foundation to carry out tests.
Addendum 9139-1:
D-9863 was forced to touch the cube. He survived for one and a half days, eventually dying to the air. After this test, the Foundation put an air tester and found out the air inside is 100% oxygen.