A Paris-bound Aeromexico 787 declared a Mayday and diverted to Dublin on Monday for what turned out to be a smoke alarm possibly triggered by a large cargo of mangoes. I found an article here:
http://www.irishexaminer.com/breakingnews/ireland/mangoes-may-have-sparked-in-flight-alarm-and-divert-to-shannon-684326.htmlThe device I'm using makes it difficult to download the audio for editing, but you can listen to it in the archives under EINN Twr/Apprch. The emergency runs from about 1320 to at least 1410 Zulu, but it's pretty standard stuff. No mention of mangoes so far.
I imagine Boeing will be adjusting sensors on the next production run.