I'm behind this 100%.

I got a SARS virus flying to Udon Thani in 2019. We were seated next to two thai guys who were so sick they could barely sit up straight. We offered them help and treats because they looked like they were about to vomit.

Plane lands, next day I'm sick. I was laid up for 2 weeks with fever, the shits, and I had a weird spontaneous cough for over 1 month after I got better.

I bet most of that plane got sick, and it was so damn avoidable.

The problem is there can he huge penalties for not flying when you booked. You might not be able to rebook your flight or hotel or days off so you're stuck either getting everyone sick or perhaps being out thousands of dollars or not going on vacation at all.