

I see the same cause and effect here.
And the same thing going on with Holloway, Fifield and the decapitated Engineer head, just at a more gradual pace.
Like we see in Alien Covenant, with David being able to manipulate the mutation through contact with the reproductive system, we saw the same thing in Prometheus that lead to the Trilobite and Deacon.
Spoiler
Probably something to do with the initial deployment on LV-223 being the same as Planet 4, with particles atomising to the air, whereas the Prometheus crew got it just spilling.
There appeared to be two schools of thought on the Prometheus production about the way the stuff works, you can see this just comparing both versions of the Pathogen mutant, to which Alien Covenant answered it is fiendishly inventive but you always get one of two outcomes.