Congrats! You found a real winner there.
Over 10 years ago, I heard of people who claimed you didn't need to eat at all, that all necessary nutrition would come in by way of the air you breathe. There has been nutty people who believe nutty things for a very long time...and so it continues...
I COULD FEEL LARGE AMOUNTS OF MERCURY AND LEAD POISONING FROM MY TEEN YEARS WHEN LEAD WAS USED FREELY IN PAINTS AND GASOLINE FOR THE AUTOMOBILE. THE MERCURY WAS MOSTLY FROM THE TOOTH FILLINGS THAT WERE POISONING ME FOR YEARS.
Lead is a known cns damaging agent. Obviously, this guys cognitive functioning has failed. Maybe due to all this lead poisoning, but chances are better that he is just off his rocker.
Life is short. Eat, Drink & Be Merry!