I'll swear that my wife got Legionnaire's from a poorly maintained machine.
It was never diagnosed as such, but they only started checking for a cause for her illness 2-3 weeks after she'd started taking antibiotics.
They were never able to tell us what it was.
Good Lord!!
I pray she made a full recovery.
I usually rip mine off in my sleep because I hate wearing it.
Then I put it back on.
Have seen many ads for a simple electronic device which cleans the mask and tubes for these (rather than replacing them on schedule) Understand that many infections can be caused by bacteria filled, unclean masks/tubes. How would one clean the machine itself, or must it be replaced on schedule as well?