A.F.
From what I remember, your body excretes stinky hormones that help your baby recognize and bond with you. These come out in your breast milk too. I seem to remember something like this happening with me too but don't totally remember what the cause was so if you're concerned, I'd call your OBs nurse. They can tell you right away over the phone if it's something to be concerned about and you definitely won't be the first person to have asked the question so don't feel dumb about calling.