Gmod Troll attack - Random white cloud

There is a random white cloud flying around my server that makes people lag when they go into it, anyone know how i can stop this or what? its really really annoying.

Ty for any help.

wait what - also you forgot some info like gamemode & map

nvm man, i figured it out, i just dont know how to close my threads, it was a wire lamp abuse big time, -.- ty for responding though :slight_smile: