That makes me think that it's MBV's base that tastes like perfume to some. As the Spearmint flavoring died down a bit with age it almost had to be the PG/VG/Nic giving you this flavor.
I'm glad I don't experience this and I'm quite a sensitive taster.
I suspect you are right. I'm so sad because as I said before, the customer service is outstanding. (not to mention the prices are really good!)