Hi everyone, It's not as bad as the title seems, but I get a little bit unwell (or sometimes more than a little) every time I travel. I might catch a sniffle, or a cough (currently chest infection added with a pulled chest muscle), or something else. Why is that?

Hi everyone, It's not as bad as the title seems, but I get a little bit unwell (or sometimes more than a little) every time I travel. I might catch a sniffle, or a cough (currently chest infection added with a pulled chest muscle), or something else. Why is that? …