Death by Strand of Hair

As if I'm not paranoid enough about things happening to my little family .. Conversation last night as follows:
Young Son: "Did you know you can die from everything?"
me: "Everything?"
YS: "Yah..like anything."
me: "Well, what if I give you a little kiss. That won't kill you."
Older Son: "It could, Mommy. Like if you have poison in your mouth or something..then it could."
YS: "A hair. A hair could kill you."
me: "A hair?!"*(getting all nervous thinking my children worry about death and obsess about it and may have deep-seeded fears and.... ...)*
YS: "A hair could get in your veins. It could get in your veins and you know how the blood goes through? The hair could get all squiggly stuck in there and you could die."
OS: "The hair could have poison on it."
Dear Husband: "...Or you could asperate it."
Thanks Hon!