I don't know for sure, and I'm sure CEW will help you out, but here's a possibility.
Amine blush is a milky/cloudy when resin cures when the air is a bit damp. Although, I think Bells are vacuum bagged, so that doesn't make a lot of sense. Is it possible these areas were touched-up with a bit of resin?
Amine blush looks bad, but isn't harmful at all, so if that is it, no worries.