Frankfurt has several little cubby holes with smokers cocooned in 3m x 1m perspex cages, a big extractor sucking their noxious fumes away. All the smokers I saw there looked quite glum. I suppose smoking is something people do while doing something else, mostly, so being stuck in there purely to smoke must have been fairly boring. I do pity the poor people who subsequently sat next to them on flights, their clothes reeking of their own and all the other smokers' smoke. If they'd been able to have a crafty fag in the open air somewhere, the smoky odours would have had a chance to dissipate somewhat.