Eating ghost peppers could kill you if you were to somehow eat enough of the ghost peppers to actually kill you.
But unless you have no taste buds or no way to feel the heat from the ghost pepper there would be no way to eat enough ghost peppers to kill you.
It would take around 100 to 150 lbs of ghost peppers or any other hot peppers to kill someone and you'd stop eating even 1 ghost pepper before you ever reached that amount of ghost peppers.
I tried a ghost pepper and was only able to eat one bite of the pepper and had to throw the rest of the ghost pepper away.
My mouth and stomach could not take anymore of the heat from the ghost pepper.
It was a good hot pepper but the ghost pepper was way too hot for me and for most other people as well.