5 ms·
It's not exactly evidence, but I heard the same thing on QI. It's actually very difficult to find any information on this other than (what seems to me as) ads p
by throwawayswede 5y ago
It's not exactly evidence, but I heard the same thing on QI. It's actually very difficult to find any information on this other than (what seems to me as) ads put up by airlines at different times (mostly 90s) to promote the idea that air quality is better now (presumably to cover up saving costs by using those half-packs.)