Go read this excellent piece by William Hughes at The AV Club:
I began to notice that my reactions to pop culture had changed, in some ways drastically. I picked up a nasty aversion (which has lessened over time) to ambulances or heavy breathing, both of which could send me into memory-tinged panic attacks. Podcasters making jokes about strokes or embolisms would force my hands into fists. But more than that, I became horribly conscious of death in the media I consumed, and how often it was employed as a plot device for cheap effect.