Ailanthus altissima is their favorite and an attractant and unfortunately, as an invasive, they are everywhere (particularly along many railroad tracks and along vegetation strips along the highways). I think once they started quarantining counties here with the initial infestations, they went about trying to find those trees and remove them.
And I have usually been able to get them after an initial jump, if I can get to where they did jump. I
I am a bit hesitant to do anything with pheromones (or similar attractants) as that seems to hearken back to what happens when something like that was used for Japanese beetles, basically putting up a huge "welcome mat" up to bring every one in the neighborhood right to your yard.
And yes, I was a chemist (now retired) and have worked in a lab that had an Ion trap MS detector at the end of a LC, although it was run by someone who was trained on operating and interpreting it (I have prepped a sample or two that would be run through it for forensic ID). One of our other labs has/had the GC-ICP-MS that I got to look at and watch in operation. Most of what I used to run were LC (UV/Vis), GC (FID), and yes, AA/AE (back in the day).
Since COVID, I have avoided going to anything - i.e., the last "group" event that I squeaked through was going to the Philly Flower Show back when the pandemic was literally just getting started in March 2020 (at the PA Convention Center) and have avoided everything else ever since, including this year's Flower show, which was held outside this past June.