Chemolithoautotrophic

   He relished what he termed the "Facemask Culture", as it allowed him to further his desire to live as close to a chemolithoautotrophic lifestyle as possible without enduring embarrassing stares and awkward questions.

   For he fancied himself a modern adherent of Jainism, and believed that even accidently breathing in a gnat or a fly that his body might use as sustenance was an unforgivable act of violence 

   You read that right - I used the word "chemolithoautotrophic" in a sentence, and correctly, to boot.

   Sorta, maybe, if you stretch the definition a little.