However, this theory has not been tested in GO, yet
I believe the reasons for the quick increase is the marketing of the products (flavors such as mango, cotton candy, watermelon), the ease of access to the devices and the juice, as well as the ease of hiding the devices and the use of the device
all the while the two main elements are tugging along, a hint of vanilla is --sometimes-- noticeable coming and going in waves, making each time you go back to smell it be both familiar, and just as intriguing as the first time, because it feels new over and over
CC: Well, he sold out of that a few years ago
Restriction-free with a hint of back pressure simply feels better