[quote=@Gordian Nought]
If Parum casted the rally as a Minor Illusion, does that dissipate the smoke from the previous Minor Illusion? Or was the cloud invoked by an actual physical object, i.e. a bomb?
[/quote]
The smoke is not an illusion, but instead has been/is being caused by something the raiders did/are doing. Thus there is no dissipating to happen.