User blog comment:Miskos3/Fairy Tail Chapter 367: Jellal vs. Oracion Seis, Review/@comment-4449950-20140121084703/@comment-7418318-20140121122033

@Carry: No he didn't get sick on the Legion. Lucy even called him out about that and he replied that the Legion is like a nakama and that Lucy is weird to think of it as transportation.

The only instance where Natsu got sick on something living was on Byro's giant flying octopus in the filler arc.