You want to situate and design the layout so that any dust not captured by your vac systems does not enter the print vat. Think about the airflow of the room, the position of the heat and A/C registers.
Getting foreign material in the uncured liquid would introduce unknowns. It may do nothing aside from block the light from reaching a spot it is trying to cure for one layer and make that tiny spot weak.
It may also create untraceable print fractures as the dust will always be moving and you can't nail down a drifting variable.
Inclusions of significant enough size will require a reprint, if you see it. If you're doing print to press or print to cast you better hope no granules enter the pattern as they might (if you're lucky) fall out but they will not burn out.
Yeah, these are worst case scenarios, but lab techs seem to get the worst case that "nobody has ever heard of" fairly often.