If there’s one scent that appeals to pretty much everyone then surely it’s eau-de-cologne, the zesty, refreshing blend of lemon and herbs whose (probably medicinal) origins are lost in the mists of time. Its oldest surviving surviving incarnation is the German No. 4711 Echt Kölnisch Wasser from – where else – Cologne, which you can buy for not very much from pretty much anywhere, but there are hundreds of other versions, from the cheap and nasty all the way up to Chanel’s divine (and divinely expensive) Eau de Cologne…

Every morning for my breakfast I have tea, toast and home-made marmalade. It’s one of my favourite things, and I love the bittersweet smell of Seville oranges, which only appear in the shops for a couple of weeks around this time of the year.

In fact as I sit here writing this post in late January, Roy is busy cooking marmalade next door, and the powerful odour of bitter orange (known as bigarade in French) is suffusing the house from kitchen to attic…

I have before me a bottle of Amaretto liqueur, which I’m tempted to drink, though seeing as it’s ten in the morning I probably shouldn’t. I also have a bottle of the latest men’s perfume from Guerlain, L’Homme Idéal, which you’ll be relieved to hear I won’t be drinking either.

The reason for this conjunction is that several reviews of L’Homme Idéal have suggested that it smells distinctly like Amaretto, so I’m testing whether they do – and the answer is that, side by side like this, they don’t. Amaretto smells…