Apparently, that butterflies are scented has been known since E B Ford's post-WWII New Naturalist publication, but isn't it lovely?
Here's a gallery of butterfly scents (click or hover to see the caption)...
Patrick Barkham in The Guardian newspaper's Butterfly watch, says the purpose of the scent is the same as ours, to attract the opposite sex. But in this case, it's the male butterflies that smell delicious rather than the females.
E B Ford's successor Martin Warren includes this discovery in his new book Butterflies, 'a compendium of the latest scientific understanding of the planet's 19,000 species.'
The pages now display photos of moths taken by Andrew Graham. This one's the Puss Moth, looks very soft and cuddly.
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If it's not me, Elizabeth Forbes, website editor (keen but ignorant), I'll say so.