It will probably have little effect on air travel until it mutates into a form that can spread human to human. Then it probably won't matter what occupation we are talking about.
In February this year the WHO reported "55 confirmed cases of bird flu in humans, and 42 deaths". I think the figures are now around 100 cases and 60 deaths. That's quite a high mortality rate. Lets hope it's not that bad. The mortality rate in 1918 was only 2%
The worry is that it's already been detected in pigs and they can also catch the human form - providing a great oportunity for the two viruses to swap genes.