Be careful out there:
https://www.abc.net.au/radio/newsrad...arbon/12452576
https://www.abc.net.au/news/2019-07-...hower/11341744
https://www.abc.net.au/news/2018-10-...eaths/10334098
(On a less serious front, I note a 2008 Cessna 182T advertised in the latest edition of the
Aviation Trader has “CO2 detection”. Hopefully it reads a constant 0.04% or thereabouts!)