I discovered this trailer
on YouTube for a 1960 adventure/mystery film called 'Scent of Mystery' starring Denholm Elliott, in which his character appears to be a hybrid of both Henry Jones Jnr and Srn.
He dons a fedora, use an umbrella for action and finds himself embroiled with a collection of characters seemingly worthy of an Indy movie.
You could almost believe this is a spin-off prequel to the Indy movies ... the Young Adventures of Marcus Brody!
A mystery novelist, played by Denholm Elliott, discovers a plan to murder an American heiress, played by Elizabeth Taylor in an uncredited role, while on vacation in Spain. He enlists the help of a taxi driver, played by Peter Lorre, to travel across the Spanish countryside in order to thwart the crime. Some scenes were designed to highlight the Smell-O-Vision's capabilities. In one, wine casks fall off a wagon and roll down a hill, smashing against a wall, at which point a grape scent was released. Other scenes were accompanied by aromas that revealed key points to the audience. The assassin was identified by the smell of a smoking pipe, for example.
The screenplay was adapted from the 1947 novel Ghost of a Chance by Kelley Roos, the pen name of husband and wife mystery writers Audrey Kelley and William Roos. The novel was set in locations in New York City. Kelley Roos also wrote a 1959 paperback novelization of the screenplay, reset in Spain.
Scent of Mystery is a 1960 mystery film that featured the one and only use of Smell-O-Vision, a system that timed odors to points in the film's plot. It was the first film in which aromas were integral to the story, providing important details to the audience. It was produced by Mike Todd, Jr., who in conjunction with his father Mike Todd had produced such spectacles as This is Cinerama and Around the World in Eighty Days.