No vaporizer eliminates smells.
Ultimately the amount of smell will depend on the herbs used. Most smell about the same when not in use. Once they heat up is when the smell gets stronger, and typically conduction vapes smell more than convection vapes when they are on. Once you exhale, the smell is at it's most and it doesn't matter after that. Vapes can also smell on their own after a bit of use as they take on the smell of the herbs. This smell is worse if the bowl is not emptied after use, and can be fixed with regular cleaning.