“Airlines have been asking Boeing to install air sensors for years. But the company decided against developing the technology. Senior Boeing engineers worried that data from sensors would prove damaging in lawsuits by sick passengers and crew members, according to internal emails and sworn depositions obtained by The Times.
An internal Boeing memo described it as a “risk” to give air sensors to even one airline, according to a deposition of a Boeing executive.”
https://www.latimes.com/projects/toxic-chemicals-planes-covid-19-travel-woes/?fbclid=IwAR0AvDEan2eK_Hv4-VJGut2bP6rfsFztydt0lN9hKm-KEtnrtb4O_WJzrvg