Play timer alarm only through AirPods

How do I make it so that my timer alarm only plays through my headphones? I use a timer to study, and if I am studying in a library or somewhere else public, I want to be the only one who hears my alarm go off. Currently, if I set a timer on my MacBook, iPad, or iPhone, I hear the alarm through my AirPods and my device. I would like to only hear it through my headphones. Is this possible? (I have tried placing my devices in silent mode and that doesn't help, and if I turn my ringer volume all the way down, it automatically increases one click so the alarm/timer still sounds even very quietly)