The word trigger,for me,is associated with something that reminds me of traumatic experiences that causes my PTSD symptoms to go into high gear.I think for other MI's,there are triggers involved too,setting off depressive episodes,etc.In other words,I associate it with mental illness.

I find it annoying when it's overused just the same as claiming PTSD is annoying and invalidating.I hate when someone says "oh,that was triggering" when it's really not,or saying they have PTSD from a breakup,watching a horror movie,or whatever,using those words in everyday language when they don't even know the true meanings.