after reading big bonners link,,, i myself may have had some frenching going on,
i though it was a defective plant and pulled them, because it was one weird looking plant amongst many,,,
the leaves were wrinkled up,, massivlly to where it looked like a kale leaf,,,instead of a baccy leaf
it's amazing how, much thier is that can make a baccy plant die or get a disease, or a fungus, bugs,,, e,t,c,
makes growing the perfect plant a miracle,