Smoke
You have a fire going on some dirt when a helicopter flies overhead. This causes smoke from the fire and the dirt to spread everywhere! It's in your eyes, your mouth, your ears! The smoke gets in your lungs and you can't breathe. Why helicopter, why!
Imagine the smoke stopping up your lungs and getting in your eyes. All you know other than the smoke is the sound of the helicopter that's causing it to happen.
えん
けむ, けむり
None
The smoke is too much and you realize this is the end (えん) for you. You're gonna die here!
Imagine choking on the smoke and accepting that this is the end. Boohoo, if only you'd learned more kanji before the end!