it looks like fake fray :)
I THINK I GET IT! it's tpt brownian motion, in real life particles bounce off each other creating a tiny, random motion. in tpt, GEL is sticky, meaning it can temporeraly attatch itsself to another particle. for some reason(probably a glitch in the coding) they are attatching themselves to the CO2 particles witch, to simulate brownian motion, wiggle about. if a GEL particle attatches itsself to a moving CO2 particle when it detatches itsself, it will retain the momentum of the CO2 particle(moving at roughly 2 px/fr(that's 2 pixels per frame)). this causes the GEL particles to fire off in a random direction, when in contact with a large quantity of CO2.
...Interesting. I have no idea what's happening here.