Just that really. DS1 had CMPI, mostly outgrown now at aged 4. I've just had DS2 and wondering if it would be sensible to eliminate dairy again (am exclusively BF) in case it emerges in the coming weeks. He is 8 days old, at the moment he is doing normal poos, a bit runny but mustard yellow but the last couple have had the slight vinegary smell I recall with DS1, although they're nothing like the explosive green mucusy ones DS1 specialised in.
So if your first child had CMPI did your second also suffer from it?