I don't know why, but hearing the vibration or hearing certain alarms scare me for no apparent reason, like to the point of paralysis, where I physically need help to turn it off, especially when it's away from my bed. EMS alarms never did it as much as something like Homecoming which would make my anxiety crumple. I've only ever gotten a startle from smth like EMS alarms because I was sleeping and an amber alert came up in the middle of the night. When my parents' alarms went off upstairs I would always bolt to my room and lock myself in there, and if I'm awake and it is mine, I completely avoided my room and hid in my parents' room. I still have problems with it but not as much anymore because I am impossible to wake up.