"Sonic attack" in China.

[grarpamp]

>> 'Sonic attack' impacted 'at least 20 regions' of US diplomat's brain
>> https://news.yahoo.com/sonic-attack-impacted-least-20-204353837.html
> pesticides!
> https://www.bbc.com/news/world-latin-america-49770369
> (they checked radio and audio spectrum to no avail...)

Maybe the maid sprinkled some brain eaters around the office...
https://en.wikipedia.org/wiki/Prion
https://en.wikipedia.org/wiki/Bovine_spongiform_encephalopathy