Smooth.. dunno, but my label from over a year ago says Smooth tobacco..
but here..
from the tfa site:
Smooth Flavor
Water Soluble
A flavor smoothener that is useful to use in concert with other flavors- "Smooth" will round out any harsh edges and provide a thick, satisfying mouthfeel. It will soften the high notes of your blend while boosting your background notes.
*** Note: some, but not all customers report that the smell has a fruity aspect.
i get the fruity taste.. I use smooth, anywhere from .5% up to 4% and not just with tobaccos..
my fruits, chocolates and creams too..not an everyday use but only on ones i feel it might go well with..
MTS
MTS stands for mellow, thick, and smooth, which is why this flavor adds body and depth to your existing e-liquid creations. Be careful, though, because while Vape Wizard is an e-liquid flavor enhancer, it does not have any flavor on its own. Use from 0.5% to 2%. A little goes a long way!
they both do pretty much the same..
adding a fluffy, filling type, smoothing out harsh spots or high notes.. muting.. almost.. tasteless for both..
only a few people like me can say they get the fruit taste from smooth..
which one is better? - depends on what you are using them for..
Can you use them both together? probably.. but it would be pointless..