hey Fred.
how do u control the power coming out of that airless gun?
from my experience, usually u reqr at least 1000 psi to atomize properly. IMO this will created a powerful/forceful mist that can certainly knock those lil guys over in about a second.
additionally, your overspray must be going everywhere and creating a high moisture level in the air of the area which would in turn cause the mist to adhere to anything within a 5-10 ft radius. This would include, but not limited to, your electrical equipment. I would also assume u are getting moisture droplets forming on all surrounding walls. with that i would worry about things like promoting mold/mildew.

moisture plus electricity is a lousy combination in my book.

as u can tell, i am very familiar with this type of equipment.

any further info u can supply would be helpful, and thanks for playing.