Flare-ups caused by a cold/flu and plane rides

So I've noticed more and more that when I get sick I get a flare up. I knew this before but it's changed a bit.

I used to get sick every single time I flew. It would be a fever and it would last about two days. Sometimes it would evolve into bronchitis. Literally every time I flew. It happened to dad too. We'd travel, be in bed for 2 days with a fever, and then be fine. So I started wearing masks on planes and boom, problem solved. It was hard to believe because I thought there was a period of time after you catch something where you don't show symptoms, and I'd literally be sick as soon as I left the plane (basically). But the mask thing worked.

When I went super low carb I thought I was invincible and didn't wear a mask on a plane to Europe. I had the fever by the time I got to Prague. It evolved into bronchitis over the next three weeks.

Anyway, now that I'm only eating beef, salt, and water. I feel invincible yet again. So I stopped wearing a mask. Because I don't learn apparently, and masks are annoying. When I went to Hawaii in May I had diarrhea for about 5 days after the plane ride. I thought it was because of the beef there (I bought beef from Costco). Now I'm not so sure... I'll have to test out Costco beef again. I think it's from the plane ride. I just got back from a family vacation and the same thing has happened. Scarlett caught something too this time which is how I realized what was going on. It looks like that fever I used to get after planes has changed into something else. It's pretty minor, mostly just diarrhea and an overall icky feeling. I'm getting better now but here's what happens when I catch a cold or get a flu:

• diarrhea for about 5 days (or other flu/cold symptoms)
• my skin breaks out (I have a breakout on my chin and chest and shoulders right now)
• arthritic flare up (my right elbow is killing me and my right big toe is swollen, and I can feel it in my right pinky) this NEVER happens unless I eat something wrong or I'm sick.
• body odour (I never have body odour unless I eat something wrong or I catch something)
• minor mood dip and minor lower back pain (these symptoms never show up separated)
• overall restless feeling
• Brain fog

I hardly ever get sick on this diet. I used to be sick all the time. I basically had bronchitis most of the time. I'm hardly ever sick and now when I'm sick I can barely tell. But I do get autoimmune symptoms when it happens. And if I'm in a plane, I never get away with it without catching something. How strange is that? Also pretty gross. Anyway, it's a not a big deal, I'm fine. I've been sauna-ing it out. But if you start getting symptoms after a plane ride, same. A medical mask seems to solve it for me.

I'm going to LA next week and I'll wear a mask and see if it happens again.