Explode a paint bomb in the center of the room that applies an even coat to everything. It’s the only way to be sure.
Explain? Not sure I can follow you here
It’s a joke inspired by Mr Bean: https://youtu.be/EiZoSuNej5U?si=wpOzf7C-X2NvhRDd. It would take care of any cameras but I doubt the owners would be too pleased!