I had a deviated septum in my right nostril, I got the surgery (an absolutely horrendous experience because the doctor failed to follow up with advice or after-surgery prescription...) Well.. now it seems that I have a deviated septum in my left nostril. I can't breathe through it much, and lately I've been getting headaches on a daily basis. Rant aside, does a deviated septum affect cognitive performance? A former psychology professor claimed something along the lines of that breathing through the right nose affects creativity and left nose affects other cognitive tasks. Is this true? If so, how does a deviated septum in my left nostril affect my study?