It’s not really about beer, but it is about sensory analysis of food products so it will fit in here. And I just can’t pass up the opportunity to share it with you.
I stumbled upon this gem of an article written by a “very knowledgeable” winery tour guide from the Napa valley area. In it, he discusses how the aroma of wine depends on which way you swirl the glass, clockwise or counter-clockwise. The reasons he posits for this are… interesting. You’ll just have to read it for yourself.
Please also note the link at the top leading to an equally entertaining follow-up article where he further attempts to explain his wine prowess and reasoning.
Facepalm, headscratch, mouth agape, etc.