In the ‘70’s and ‘80’s there was a reptile zoo in Miami Florida, along US1. Called the Miami Serpentarium. The founder, Bill Haast, progressively dosed himself with larger and larger quantities of toxic serpent venom to make himself immune when he handled the snakes. The man survived multiple snakebites that would have killed any other human being.
For a job like that, it kind of makes sense.
There was a book by the snake handler. Title: Cobras in His Garden.
Parents bought it at the attraction in the 1960s.
Before him, Ross Allen did the same at Silver Springs Park in the 50s and 60s.