I feel like one of the reasons the general moviegoing experience has failed to expand to include senses other than sight and sound is that the goal of most movies isn't to convince you that you're experiencing something, it's to make you empathize with characters who are experiencing something.
Sight and sound are fantastic senses for triggering empathic mirror neurons and making us think about how someone else feels in the scenario we're seeing and hearing, but other senses like smell, taste, and touch primarily trigger a personal response rather than an empathic response. Those senses are about me, not about other people.
So if I'm watching Die Hard, I absolutely want to be blown away by the visuals and the sounds because that helps me empathize with John McClane as he fights the bad guys. But actually smelling McClane's sweat or tasting the blood in his mouth or feeling the glass in his feet would pull me out of the movie, because suddenly I'm feeling those things as if I'm doing the things John McClane is doing, but the point of the story isn't that I'm doing those things, it's that John McClane is doing those things.
On the other hand, if I were watching Planet Earth or Jiro Dreams of Sushi, it would be amazing to smell the Serengeti or taste the sushi Jiro's making! Those kinds of films would be immeasurably enhanced by engaging my additional senses, because their purpose really is to put me in the moment as if I'm really there.