6. I have a fifth sense

On odours, or our often overlooked olfactory oomph

My wife has burnt her cake. I can tell, even though this happened two floors away from my desk, because minuscule pieces of it have found their way into my nose.

Expelled from the oven, they have drifted on the air from the kitchen into the hallway, up the stairwell, and in through our bedroom door. They have turned a corner, doubling back on themselves …