I found this article:
http://www.usatoday.com/story/travel...ying/27177835/

An excerpt:
In 1995, WHO issued a report stating aircraft disinsection performed properly should be encouraged:

"Although some individuals may experience transient discomfort following aircraft disinsection by aerosol application,
there is no objection to any of the recommended methods of aircraft disinsection from a toxicological perspective."
However, asthma sufferers are among those who should be aware of such transient discomfort.