Traveling? 8 Ideas on How to Stay Healthy on Public Transportation

I cringe every time I fly in a circulated-air, confined-space airplane or a well-used train. But…I’m not going to stop traveling, so I have to deal with it. I have never gotten sick, not even a cold, due to travel (and, I flew home from Europe on March 14, as the pandemic started…yikes!). Wondering where …