As others have said, get it checked by a Doctor, it should be noted.
My wife suffers from labyrinthitis. In the past she has had episodes were she couldn't get out of bed without throwing up. The Doctor showed her how to do the Epley maneuver which proved to be helpfull. She now rarely gets it.
We are keen dinghy sailors, we sail 3 or 4 times a week, we compete at a high level (open events and world championships). The year before last we did a long distance dinghy race and the weather deteriorated with wind gusting force 7, it was like a roller coaster ride from hell. My wife was fine, in fact, in retrospect it was the most fun we've had for ages (on a boat
Clearly she wouldn't sail during an episode, but they are few and far between and she knows when it's comming on, in that respect it's a bit like a cold.
I guess flying is more tightly regulated and rightly so, in the end you'll have to get an expert opinion, no point wasting money if it's a non starter