Conversations with Charlie

I'm not sure how I feel about this conversation...

Me: (as Charlie is holding a smooth stone) Be careful with that stone, don't leave it on the floor.
Charlie:  Why?
Me: Because it's not good for Carter.
Charlie: What if he dies?
Me:  That would be very bad. You would miss him and you would feel guilty for the rest of your life.
Charlie: When I grow up, I will make a special salt and when you put it in his mouth he will be alive again.
Me: Oh, that would be awesome!  But, what if it doesn't work?
Charlie: It will work. (This is said with a tone implying that the possibility of his invention not working is an absurd proposition - if he can imagine it, he can make it happen, I love the optimism.)

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Me:  (detecting an offending odor) Did you fart?
Charlie: No.  I just let some air out of me.