"Kids Smell"

I just checked in on the boys, my ritual when I'm on my way to bed. It's funny, their smell has changed. I used to walk in and smell "not so clean diapers," now they smell sweet. Literally. Kind of like candy. And they still wear diapers. What causes that? No complaints. I really like this new smell. Heading back for a second peek (whiff?) and then off to bed.