How could air bending kill anyone?

Tornado
Take away breathing
Let you inhale not exhale and vice versa

...blow 'em off a cliff?

It's very simple.Airbenders could take the air out of your bodies and basically suffocate you.

I agree with the other people! Air is a very dangerous weapon. So only use it in emergencies! Lol!

make a really strong tornado

yes it can if you have a vortex or somethin spinin around you and you try to breath, you can it sucks the air out of your lugs basicly so you cant breath its like when your dog sticks his out the window and he pops his head back in sometimes...thats so he can get air,the wind is blowing to hard in his face to breath in or out ,and it depends on the ilipat you use and were you aim the attack.also what everyone else sinabi

i agree with everything that was sinabi here. most of the people think air the the weakest element because it works madami on a defensive way. that's why this element is so underrated.
but when you think of the possibilities of being killed sa pamamagitan ng an airbender, you will understand that air isn't weak, at all.
actually, i think air is the most powerfull and dynamic element. it's also my paborito =)
and while apoy is the most overrated element, i consider the weakest

maybe firing some needles or spikes with air xD

it can push thm off puno ,cliff,tower or
it can go soo fast you pass out :3

it would suckout the air

sa pamamagitan ng lifting 500 feet in the air and slamming you to the ground.