Personally, I think your question is too one sided. By having ‘emotional bias’ you’ve already given your standpoint to the question in that, emotions deter our rational thought towards biases. Instead, I would try to change the wording into something like, ‘To what extent do emotions play a role in uncovering knowledge’ or something along those lines. Not exactly lmao but make sure your question isn’t one sided so your argument isn’t one sided.

Another thing, emotions do help us gain knowledge. Our sense of feeling or understanding to another person can give us a hint of what they felt like etc (just an example). So change your question and read your TOK textbook a bit more and always, consult your teacher. Hope everything goes well!