The smell in the laboratory was new. It was, in the language of the business, tenacious: for more than a week, the odour clung to the paper on which it had been blotted. To researcher Alex Wiltschko, ...

A whiff of coffee, smoke, rain, or spoiled milk feels instant and effortless. But inside the nose, that simple act depends on one of biology’s most complicated sensory systems. Scientists know that ...

For most of us, the sense of smell is an integral part of everyday life; it plays a critical role in providing information about our surroundings, alerting us to potential dangers, enhancing our sense ...