How to use "deadly" in a sentence

It was ugly and deadly

But neither can two great and powerful groups of nations take comfort from our present course - both sides overburdened by the cost of modern weapons, both rightly alarmed by the steady spread of the deadly atom, yet both racing to alter that uncertain balance of terror that stays the hand of mankind's final war.

The gasp drew the deadly mist up his nose, where the active poison - a particularly fast-acting neurotoxin - was instantaneously absorbed through the sinus membranes