I am going to try this inhaler method too. The idea of cleaning out my lungs is very appealing. I believe that some of the stuff we breathe in can not be removed by the lungs, like synthetic fibers and larger particles of stuff that can not be broken down... especially stuff that is not natural and carbon based. Seems like chunks of particles can be breeding grounds for bacteria and infections.
Maybe even asbestos can be removed with bubbly H2O2.