I love perfumes. Some perfumes. I hate others. But I feel strongly about scent. 

I once tracked my wife through the university campus because I could tell she visited the physics lab I worked in and I could smell which way she went and caught up with her 5 minutes away. 

 I thought I was good at smelling things but you, sir, take the cake 🏆 

 https://skeptics.stackexchange.com/questions/1998/can-humans-smell-if-a-book-has-been-opened#5680

Feynman did it better