I've had the same experience with Mt Baker, and I ordered from them for quite awhile because my husband liked their Blue Moo and Moo juice. Mt Baker used to give everyone a free 15ml sample with every order, and let the customer pick what they wanted. They only give a 5ml sample now. I have a sack of My Baker ejuice that will probably never be vaped since it's over a year old now.
See, they fresh mix the ejuice and get the orders out very quickly. The thing is there are so many people working there that may do a sloppy job of mixing. I don't know how else to explain the inconsistency of their joose.
Some people have more refined palates than others; I do, and it sounds like you do, too, since that perfumy taste bothers you. I wanted to love them because of the prices!! I honestly wonder at the quality of their flavorings, because not all PG, VG and nicotine are created equal. I didn't know that when I first began vaping.
There's a flavor they sell called Vanilla Butternut Squash, and it's so good when it's fresh, but after a couple of weeks it tastes spoiled. Twice this happened, so that pretty much was when I gave up.
I have two week old Vanilla Butternut and it's still fine. I think taste is just subjective. That said, I have my second order on the way. If anything seems different I'll report back.