Sorry, meant to explain a bit further...

"If not, then your buzz originates from the other parts of your rig like pedals, or your laptop, etc."

Turn back on one thing at a time and see if the buzz comes back
Turn back on lights.  No buzz?  It's not that
Turn back on your computer.  No buzz?  It's not that
Turn on your a/c.  It's buzzing?  Well, looks like you either play without buzz in the heat or you put up with the buzz and stay comfortable  🙂