OK, first off these should all be bold and have proper capitalization:
Special Containment Procedures:
The first two sentences should really be combined as one, also, what is a "beta class liquid containment cell"?
There are some SPaG1 in this, for example: "accrue" which should be "occur". Gonna go ahead and recommend you run this through a spell check to catch any more of these errors.
There's a lack of punctuation in here as well. Remember to add a period to the end of a sentence when you want to start a new one.
The redactions/expungement don't really add anything to the article and in fact, they kind of take away from what you're trying to tell the reader here. Additionally, [DATA EXPUNGED] is typically used when that information has been deleted or is no longer available so the expungement doesn't really make sense given this things anomalous ability?
Alternatively, there are instances where a comma would be better used than a period, for example:
" It seems to have no sensory organs. However, it is still able to detect the location of a subject within (REDACTED) meter range by unknown means."
"by its mimetic effects", it's memetic effect.
"When a subject hears SCP-2896 vocalizations they will have the uncontrollable urge to walk to location of SCP-2896." I think you accidentally a word here.
"2 meter radiance", this would be "radius".
There really is no clinical tone in this article, honestly. It felt more like I was reading a story rather than a scientific document and the spelling and grammar errors paired with this killed any immersion I had in it. I really recommend that you read this aloud to yourself to catch any other awkwardly worded phrases, and that you also check out this essay on clinical tone: Clinical Tone Declassified.
Overall the concept isn't very interesting, honestly. It kind of comes across as a generic monster as is and feels like a lot of different aspects from other successful scips have been taken and put together in this one. Most notably, SCP-066, SCP-999, and with the whole appearing in the lungs thing, SCP-1609. I dunno about this idea, really. If you're set on it, try taking it over to the Ideas and Brainstorming forum and getting the concept developed more before you rework the draft/ or add more to it. What's the story you're trying to tell here? Why does this thing exist? What is its purpose? Answering some of those questions can provide some depth to this. As is, it just doesn't do anything for me. Whatever you decide to do, good luck with your draft!