[Cheap_Suit]

public EmitSound(id, channel, const sample[])
{
    if(!is_user_alive(id) || !is_user_connected(id))
        return FMRES_IGNORED
    
    if(block[id]) return FMRES_SUPERCEDE
    return FMRES_IGNORED
}

I tryed this, but only blocks the knife sounds.

[XxAvalanchexX]

My guess is that you are hearing the client-side sounds.