Hi Shari -- I have posted the slide on the use of filters -- the speaker was referring to water filters and she claims that they are bad if you are susceptible to MAC. Having said that I was at a support group yesterday and I brought this up. As it turns out there was an engineer in the group who disputed this. I have never used water filters of any kind and don't plan on doing so. However, I think it does give one pause, given the ubiquity of these products. The manufacturers claim that they filter out 99.9% of bacteria and as the speaker said, the .1% is the mycobacteria. I have not heard of chlorine being bad and that using a filter there would help. The speaker did not mention that. I think it prudent to avoid things known to be bad for us -- hot tubs, humidifiers, street misters, indoor pools etc. I take very quick showers now and try to keep everything ventilated. I may soak the shower head in vinegar one of these days. I guess it all comes down to how much you are willing to change your life and how much of a burden it is to institute those changes.
Mary