Pat Volkerding, Slackware maintainer, suffered from Actinomycosis in 2004 - quite a chilling read [0].
> To help me avoid more tooth decay my dad bought me one of those fancy
> rechargable electric toothbrushes that really powers away the plaque.
> It also creates a fine aerosol mist of plaque, and I started to wonder
> if 4 years of using this brush had caused me to breathe in some of this
> plaque mist and moved an infection into my lungs.