SnareBuzz is an audio effect plugin that emulates the wires of a snare buzzing when there's another instrument playing near.
Why do you want to emulate this effect if every engineer in the world has tried to get rid of it? Short: because it's cool! Long: because it doesn't exist in the DAW environment, it's something that we are all familiar with, and if you're really used to play live with a band it's weird not hearing it when recording instruments separately.
Attack and release controls that set how the snare reacts to the incoming signal, HP and LP filters to shape the sound of it, room ambience for a more natural feel, overall gain, panning of just the effect and dry/wet controls.
Insert it on the bass track, adjust the mix knob just a tiny bit and hear how these little wires bring life to your mix. You'll miss it when it's bypassed.