Basically I want to recreate a bombardier beetle's explosion effect just like it is shown in this video at 3:29 youtube.com/watch
In simpler terms, I want a "spray" that can spread out (something I already made) and I want a "smoke" that slowly gets brighter.
The problem I am having is getting that "smoke" effect since the spray is simple enough. For the smoke, I have tried getting a continuously firing particle that has the fog exponential (so it stops at the bounding box) and swirl effect, but it doesn't get brighter and it doesn't look like smoke.
Here is an image of the current effect (the one on the left is the one I need fixed and both look better in motion)
These are the current settings I have on the "smoke"