From Rosemary Cook, York, UK
Your correspondent Erik Foxcroft would be interested to find out if other people can imagine smells or tastes. I can do so vividly: if I can’t get to sleep, I do a mental walk through my old school, where each room (classroom, lab, gym, storeroom) has a different smell. Or I imagine an all-you-can-eat buffet where I taste all my favourite foods in turn. The sensations feel absolutely real (Letters, 25 April).
