Also, for multiple reasons, no one should fly without wearing a P95 or comparable or superior mask. You never know when smoke will hit. It is most critical during takeoff and landing, or if on the ground at a terminal. 3M 8577 is decent, with an essential bonus carbon layer. Place a disposable ASTM level 3 surgical mask on top too.
Note that an SpO2 finger meter can fail to recognize CO poisoning; it can be misleading with a false normal value of SpO2.
3M 8577 has a bonus carbon layer for this purpose. Its protection is not complete, but can limit the damage. You should also carry spares in case the carbon layer is exhausted.
Also, you start to smell the diesel fumes. The more you wear a clean mask, the more sensitive your nose becomes to mild fumes.
Problems like these make the value of good reporting obvious. If you want to be a muckraker this is a golden age.
[0] https://www.wsj.com/business/airlines/air-travel-toxic-fumes...
The only commercial aircraft immune to this issue is the B787 because it does not use engine "bleed air".
Edit: answered my second question on my own: P100 masks are effective
https://en.wikisource.org/wiki/NIOSH_Guide_to_the_Selection_...
karakoram•1mo ago