‘Eurowings should be ashamed of how they handled this situation,’ says passenger

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[–] 15 points 3 years ago* (last edited 3 years ago) (1 child)

The majority of airplanes are equipped with HEPA filters. As in, removing 99,97% of particles over 0.3 micron in size. The unfiltered air is fed in from the outside. It's pretty clean and not a consideration for allergens like peanut particles.

Source: https://www.nationalgeographic.com/travel/article/how-clean-is-the-air-on-your-airplane-coronavirus-cvd

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  • [–] 5 points 3 years ago

    As in, removing 99,97% of particles over 0.3 micron in size.

    HEPA filters remove 99.97% of particles that are 0.3 micron in size. (That is the size of particles they're tested with, as it's the most difficult to filter.) They remove over 99.97% of particles larger or smaller than 0.3 microns.

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