I have always been very open about it. I am a very open person (many would say to open <img src="i/expressions/face-icon-small-wink.gif" border="0">, and I believed that it raised CF awareness. I also have the attitude that CF doesn't define me, and I usually tell people "I have Cystic Fibrosis. It's a lung disease. If you Google it, you will think I am about to die, but that's not true. I have a really mild case, I just need to make sure I take care of myself" and sometimes I'll explain about 45 minutes, 2x a day of nebs and how I HAVE to work out and get enough sleep.
It did burn me once, though. At my last job, I had to travel to another office to work on a project. I came down with pneumonia and ended up in the hospital while I was there (that was only the 2nd time in my life in the hospital). I explained my CF to the people I was working with. After that, one of my coworkers heard a manager say that I was "an unreliable engineer because I have CF." Now I am a little more reserved about it with coworkers, but now I also work for the government, where they are much, much, much more understanding about health issues and, if something like that happened, there would be hell to pay to the person who said that.
It did burn me once, though. At my last job, I had to travel to another office to work on a project. I came down with pneumonia and ended up in the hospital while I was there (that was only the 2nd time in my life in the hospital). I explained my CF to the people I was working with. After that, one of my coworkers heard a manager say that I was "an unreliable engineer because I have CF." Now I am a little more reserved about it with coworkers, but now I also work for the government, where they are much, much, much more understanding about health issues and, if something like that happened, there would be hell to pay to the person who said that.