silent but deadly

When a fart can be emitted so silently yet its strong enough to floor a rhino.

a silent fart that smells

something that, when combined with a dutch oven maneouver, is an excessive use of deadly force.

perfect description for beno

Not a spleecher or a barfoom in that the originator of these stinkbombs cannot be detected until it is too late.

A subtle release of nasty botty gas.

Legend has it that a man named Pierre Chappele, when on a recon mission, he found an enemy that was going to the bathroom.

Pierre snuck up behind him and slit his neck, his last words sounded like a mild fart.