The thing I'm worried about is people in crowded, quiet areas like hospitals who have conditions that trigger on sudden noises or surprises. Many people in the hospital aren't up to speed on the news. Because, you know, they're half-awake and feeling terrible. So when the nurses' and patient's phones all start blaring while they're treating a patient who then has some sort of cardiac or nervous system response to the scary-sounding alarm...

I dunno. Maybe there's no precedent for my worry. But it feels real.