I have firm white secretion that develops all the time on my areola and nipple. I remove them with pressure. There is no smell to it just very irritating. I have breast fed 3 children ( last child is 7) I would still produce milk after breast feeding for 2 years after stopping. Breast fed last child till she turned one. They do not hurt. Every now and then I will have one filled with a kinda yellow fluid and that one will hurt but does not come often. Any ideas.