I am getting over bronchitis. I still run a low-grade fever from time to time, but much better. I have a tickle with coughing too, but much better. I will be flying in 10 days. Someone told me it is unsafe for my health (lungs, eyes) to fly because even though my external symptoms may be going away, they said I still have internal symptoms in the lungs for weeks. I will also be doing some hiking in the Grand Canyon, Zion & Bryce. Will it be safe to fly and to hike?