How does one write no AirBNB into a rental contract that AirBNB or the like is forbidden? Is this merely a form of subleasing? Assume a venue of Florida.
How about "no subletting" or "no short-term subletting" or "no short term rentals". You can, of-course, make a term which mentions AirBNB specifically, but that may not yield the desired affect as there are other similar options.
Note that just putting something into a rental contract does not necessarily make it legal or otherwise, and the legality will depend on where you are. In some places, forbidding AirBNB would be considered a breach of the right to quiet enjoyment, in others, having an AirBNB allowing AirBNB may incur additional council fees.