In Victoria (AU), "Maura the clairvoyant librarian will check your aura, look deep into your eyes and see if you’re more Dan Brown than Salman Rushdie."
Her powers tell her that a good sniff of her customers reveals lots: for instance travel readers often wear "... no deodorant, so in many ways you can tell."
So sniffing our patrons makes me psychic? Wow. Because I do this every day in out library. "Sniff, You go in the area with the plastic covered seats. Or, Sniff, you can go sit on the nice chairs."