On average, humans have superior smelling capabilities with their left nostril.
What a great fact. It means that I can basically walk around with a finger up my right nostril and really not lose much smelling power. Beyond that, it’s simple, pretty damn gee-whiz-able and just beautifully digestible. It’s the kind of knowledge nugget that a guy like me can find, place in my little basket of enlightenment and be quickly on my way.