Definitely honey, not pear drops or acetone or anything like that (although DH does sometimes describe it as "apricots". He has an odd sense of smell, though).
DD2 may have a genetic syndrome and if she does it may cause various health problems (one of those syndromes with a vast range of how badly you can be affected) -- in the normal course of things she'll probably start getting the relevant tests in a few months. But she does sometimes smell distinctly of honey and I find myself wondering, in an idle paranoid fashion, whether there's any significance to that. And, as so often, I thought "Mumsnet will know" (given that smelling of honey is her only real "symptom" I don't want to go running to the GP and have them look at me like this >>
).