Brain, meet nose. Nose, meet brain

[bunn]

According to QI just now, the nostril you breathe through affects how your brain works.   A couple of years ago, I filled in a bunch of quizzes that all told me I was rightbrainified and this mystified me a bit. 

Finally, I have an explanation!  I have a small nasal polyp (Fred the Polyp) living in my left nostril, where he obstructs the breeze.  Clearly the quizzes have detected that the right hand side of my head is better ventilated!