'Fire cured Virginia" is most likely a misspoken term. City folk don't know what a flue is, so they think they're reading a typo and to make them even more dangerous, some actually do know a slight bit about how "Virginia" tobacco is cured with heat, so they assume it must be fire cured...fire = heat.
The facts are...
Class 2; fire-cured types and groups.
(a) Type 21. That kind of fire-cured tobacco commonly known as Virginia Fire-cured, or Dark-fired, produced principally in the Piedmont and mountain sections of Virginia.
(b) Type 22. That type of fire-cured tobacco, known as Eastern District Fire-cured, produced principally in a section east of the Tennessee River in southern Kentucky and northern Tennessee.
(c) Type 23. That type of fire-cured tobacco, known as Western District Fire-cured or Dark-fired, produced principally in a section west of the Tennessee River in Kentucky and extending into Tennessee.