Tastes and sounds of travel stay with us long afer the trip, writes Pamela Wade.
My husband knows he'll be in big trouble if he ever buys me my favourite perfume.
For years now, I've been training myself to associate the scent of Lancome's Miracle with setting off on a plane trip; so as soon as I'm airside, I swing by the duty-free shop for a squirt from their tester bottle.
Already, if I catch a lingering whiff on my watch-strap when I'm back home, I can instantly visualise the airport, the passport and boarding pass in my hand, the planes outside - and feel the excitement. The idea is that when I'm a shrivelled old lady stuck in a chair, I can sniff the bottle and get instantly high: say, 30,000 feet.
When we travel, we take photos and buy souvenirs, but all too often ignore the other senses, which can be much more effective in summoning vivid memories. Smell seems to be a particularly direct route back to the past, although it's not always possible to reproduce once back home.