It is normal to have some breast fluid throughout your adult life. You wouldn't know you had any if you didn't express it in some way or another. It is minimal and am not sure if it is still considered lactating or not since it has been 10 years since I have breast fed.
it is normal to have a little bit. I had this a few years ago, I had never been pregnant and fluid would come out if I squeezed my breasts. I went to the dr and she told me that it was normal but not to squeeze them.
about the tasting bad thing, I have no clue, sorry.
Take Care
What do you mean by "normal breast fluid"? If you are not nursing, then it's not normal to have breast fluid.