Originally posted by ladymuck
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Your assertion about the air on planes is also as good as wrong. When smoking was allowed on planes the air exchange rate per hour was many multiples of what it is now. Ultimately the air is exchanged and filtered, but as this isn't from the drop down oxygen masks attached to your face you are obviously going to breathe in the expelled air from those beside, in front, and behind you throughout the flight. This is the reason people cite becoming unwell from airports and flights, after traveling for hours.
Covid19 spreads very quickly and a 15 minute exposure is enough for you to get quickly unwell with it. Flu isn't quite as short and is 45 minutes or more for a good dose. Obviously a 1 minute exposure talking to an infected person is unlikely to get someone unwell unless they are very immunocompromised.
The traveling effect and subsequent illness increase statistics are real. The best thing and easiest thing to do is to wear an FPP3 mask but still eat the meals on long haul if you want. Wearing a mask for the majority of the flight will reduce exposure time. Since I've done this I haven't been unwell after flying and have been abroad a lot on business the last 2 years.
I don't blame people for repeating the flying air filtration myth, it was promoted by airlines and newspapers in 2021 to try and get people flying again. It was enough to get funding for studies, which actually found that people do get infected on flights and in airports, more so flights, quite regularly and easily.
It stands to reason too, because you're mixing people from all over the world in a confined area in an airport, and then on a flight where people are connecting from all across the world and taking multiple flights. It's why the top three contagious diseases, of which SARS-cov-2 covid19 is one, are able to spread to fast across the planet so quickly.
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