I have both my 5 week old daughter and my 21 month old son in bumgenius pockets, which have been in rotation since my sone was 5 months old.
I have noticed that when my girl wees in one it stinks of urine really stongly (i.e. her bedroom smells like wee most of the time!), but my son's smell fine! Same nappies, same inserts.
Anyone have an explanation for this! I might be able to cope with the fact my daughter smells like wee if I know the reason for it!