Probably not!

I’d be fairly confident Emirates’ air filters would have nothing to do with this, otherwise you’d see it happening on a regular basis! This sort of thing happens rarely, but does happen and doesn’t tend to favour one airline over another. Just consider that many people are in close proximity for a long time. For example, it seems to happen quite regularly on cruise ships, where of course the incubation period is longer. They of course don’t have Emirates’ air filters though!

Also, pilots are unable to ‘boost’ air. Whatever that means.