Bogleech.com's 2018 Horror Write-off:

Heart attack

I'm not having a heart attack.

Sure, my chest hurts, and I'm sweating a lot, and I'm kind of dizzy... but I'm not having a heart attack.

My chest hurts because I got hit there with part of the ceiling.

I'm sweating because it is quite literally burning hot in here.

I'm dizzy because of all the smoke.

I'm not having a heart attack.

And that's all the dispatcher heard before they hung up on me.