Sounds familiar! xD But if it works for your character, do not fight it.
If it does not... Well... Try to imagine that you're biting into a lemon or smelling something really bad?
"I'm smiling, Private. And you know how I hate that."
Keep calm and eat BANANAS with Byakuya's approval.
"Fight with me, brother! Or die alone!"
".... Not much of a threat, considering we're already in Hel."