There have been a bunch of threads recently referring to the case of a guy, who is now living in agony and waiting for a lung transplant because he took one breath from his BCD and got infected with invasive fungi, even though he claims that he never skimped on pre- and post-dive maintenance and looked after his equipment better than after his wife. The article mentions that the cleaning agent one uses should be effective against Mycobacterium tuberculosis. What disinfecting agent are you using for your BCD, and do you know whether it is really effective against all the wonderful things that may be growing inside?