User blog comment:FairyRaven/Exceeds and Earth Land Counterparts/@comment-4829046-20120820134427

I'm just going to say what I have said countless times before. The Dragons probably get teleported to various universes at certain intervals via Eclipse gate and at one such time they had existed in Edolas temporarily and the humans in Edolas revered them. However! That does not explain how Porlyusica exists. Maybe Dragons aren't that ancient, or maybe Porlyusica is actually older than she looks(can you even imagine) If Acnologia existed in the past then the others should have existed as well, unless of course Carrot's speculation is correct and Acnologia is a Demonic being rather than a true dragon.

The Gajeel part was pure bullshit! All of a sudden every DS in existence get Natsu's comedic sickness. Da Fuq! It made things interesting but STILL!!! The other DS have been on transportation many times but have never gotten sick. You are right however! I also speculated that only TRUE DRAGON SLAYERS get motion sickness, hence why Wendy and Gajeel never ever got it. Maybe you have to have an exceptional amount of magical power and enough strength to go to Dragon Force mode. Wendy and Gajeel lacked these. It is very likely that Wendy and Gajeel will go into Dragon Force mode in this arc. And maybe, the reason why Cobra didn't get sick on Nirvana is because of his hearing(your balance can also be controlled via ears) or maybe some poison that allows him to keep balanced.