Per 
Item #: SCP-
Object Class: Euclid
Special Containment Procedures: SCP- must be contained in an air-tight, fully sealed container with no windows and no more than one door (it is likely a custom room made just for SCP-) . SCP- currently resides in Sector-03 at Site-19. The container must be monitored, cleaned once a month, and checked daily for cracks. If a crack or a cut in the wall is found, it must be sealed immediately. If SCP- escapes, the facility will go into a containment breach, this must be avoided.
No smoke may enter the container at any time, or SCP- will grow and can escape. SCP- does not seem to like being contained in the foundation's custody. SCP- has only attempted to escape once, though it still makes the foundation worried. Foundation staff MUST not breathe while in SCP-’s cell. Breathing while in the cell causes a part of SCP- to be inside of the body and can cause the symptoms listed beforehand.
What to do to avoid a containment breach
Moniter SCP- AT ALL TIMES.
Do not breath in SCP—1
Do not talk about the category of words and phrases listed previously.
Containment Update: After the last check up with SCP- showed signs of aggression,
Dr. Herald Genus is no longer allowed within a 5 mile radius of SCP- because of the agitation that caused SCP- to become extremely agitated, and almost made the foundation change the object class to Keter. One foundation staff member was walking down the corridor of Site-19, when they saw a small smoke cloud, thought to be a piece of SCP-. The foundation dubbed this
SCP—1.
Description: SCP- is a large cloud of smoke, often levitating 4 to 6 feet off the ground. SCP- seems to have a sentient mind, as it can somehow contact foundation staff when nobody is in or near the containment cell. When staff are in the container, SCP- seems to like speaking to foundation staff about the other SCP objects and entities, especially SCP-173. Tests on SCP- indicate that it is similar to the smoke given off by a cigarette or a cigar. Foundation researchers have yet to figure out if SCP- uses telepathy or physical speaking to speak with foundation staff. Further tests must be conducted.
SCP- is usually docile, though when agitated, it seems to have an unexplainable effect on the human mind, causing anyone near the entity to have a variety of symptoms, including: Seizures, Vomiting, Brain damage, Headaches, and most commonly among all of the staff who have agitated the entity, Amnesia. In Some cases of this happening, although very few, it has driven foundation staff and personnel to suicide.
A common theory amongst the foundation is that Staff makes SCP- agitated when staff, personnel, and other security has any speak about religious beliefs or non-beliefs. Another theory is that SCP- gets agitated when staff and personnel speak about SCP-173. SCP- and SCP-173 seem to have a link in some way, for example, in the first case of the effect that SCP- displays on the staff and personnel, when SCP- became agitated, SCP-173 started making strange noises that staff and personnel have never heard previously.
Discovery: The SCP foundation discovered SCP- when reports of mass suicide in London, England started flooding city news channels and papers. Along with those reports, it was noted that every time a suicide would occur, a cloud of smoke would appear nearby, but quickly dissapear. After the foundation caught wind of this situation, foundation staff brought a small containment vessel for small SCP objects. After the foundation captured a sample of SCP-, they immediately put it into containment.
When SCP- was first captured, it was put into a 5 centimetre vile for testing at a later time, but overtime the cloud grew bigger, despite not having smoke anywhere near the room. The first words ever spoken to foundation staff by SCP- were “Where is it”, foundation researchers have yet to figure out what this means.
Containment update #2: The SCP foundation has seen more and more cases of SCP—1 spreading around. Due to this, Foundation staff have been encouraged not to go within 10 meters of SCP-'s containment cell.
