My mum is in her 60s and very slim and healthy, no health complaints. For the past few months she has noticed the skin on her ribcage smelling slightly "cheesy" - like that milky smell you notice when you walk into a home with a newborn baby. It´s not noticeable unless you literally smell her skin close up, but she can smell it herself and it bothers her. The skin doesn´t look at all different and she has switched to using unfragranced products and sensitive washing powder, which has made no difference.
Any ideas?