Earlier quoted context omitted.
Perhaps a wall-plug air-freshener form factor would last longer?
Even better (or worse?) hide it behind the faceplate, a little more work but certainly better hidden! Just turn up in a yellow jacket, official looking lanyard and tools...
https://www.yumpu.com/en/document/view/29557041/aruba-ap65wb...
They did it as a 2-gang but you could surely do smaller.