Per 
Head Scientist: Dr. ███████ █████ Black
Item #: [TO BE ADDED]
Object Class: [TO BE DETERMINED]
Special Containment Procedures: SCP-XXXX should be contained in a 5m x 5m x 10m airtight room, Foundation Personnel lower than Level-3 should not be granted access anywhere near SCP-XXXX's containment chamber. Observation room should be given no less than 4 Special Foundation Made gas masks.
Desciption: SCP-XXXX is a gas that was found in a town in ██████, it has no smell and cannot be detected by ordinary chemical detector. Just like a normal gas SCP-XXXX can be blown by a wind, although often much the gas will not move even if the wind is strong. SCP-XXXX cannot be filtered by ordinary military grade gas mask, The Foundation has made a gas mask that was specialized to counter SCP-XXXX. The Gas is also thought to be sentient, as it only attack when it was provoked in any ways, and it was reported that SCP-XXXX can understand standard English words, often times this SCP will obey orders.
Breach Procedures: If SCP-XXXX has breached containment, all personnel inside the observation room should equip the Foundation gas masks, all other personnel that is near the containment chamber's sector should evacuate. All entrance leading to the containment chamber should be closed by an airtight door with the thickness of 381mm. MTF Beta-7 "Maz Hatters" should be mobilized to the site.
Addendum:
Addendum 0-1 Alpha:
A test was initiated by Dr. Black to prove Tha gas' sentient. A Class-D entered the containment chamber from the airlock to put to 2 signs that reads "Yes" and "No", several written question was written by the test's supervisor.
Begin Log:
Dr. Black: Let's get started, Class-D may open the canister's lid.
Class-D opens the canister
Dr. Black: SCP-XXXX if you can hear and undestand me, please move to the "Yes" sign!
SCP-XXXX: [Yes]
Dr. Black: Ok, first question: You have been classified as an SCP and currently is being contained, are you aware of that?
SCP-XXXX: [No]
Dr. Black: Second: Do you ever have the desire to escape your containment?
SCP-XXXX: [Yes]
Dr. Black: Third: Are you aware that when a living being close to you will die?
SCP-XXXX: [Yes]
Dr. Black: So, do you have the desire to kill someone or something?
SCP-XXXX: [Doesn't respond]
Dr. Black: Final question, are you afraid of us?
SCP-XXXX: [No]
End Log
SCP-XXXX is proven to be sentient and have the desire to breach it's containment, extra security measures should be added in SCP-XXXX's containment sector. Dr. Black is discussing with the Site Director and █-█ ██████████████ to classify SCP-XXXX to Keter or Euclid.
