In this post the poster says:
Then this particular scene of Remy savouring food came along (with like swirls of different colours popping up in the background) and I thought, "Huh. That reminds me of synaesthesia."
I googled it and apparently the animator who worked on that particular scene does have synaesthesia!!!
This is that particular scene:
I follow the animator website and find out his production behinds that scene. However there is still no information to confirm that he actually has synesthesia, or it's just his imagination about the phenomenon.
So is there a way to confirm that he actually has that?