Besides facetious, the word is aerious denoting airy.
Welcome to the Straight Dope Message Boards, Ardent1, we’re glad you found us. For future ref: when you start a thread, it’s helpful to other readers if you provide a link to the column in question. Saves search time, and keeps us on the same page. In this case, I assume it’s: What English word has five consecutive vowels? - The Straight Dope
You might also be interested in this recent thread on the same topic:
No biggie, you’ll know for next time. And as I say, welcome!