Actually, they introduced PC based 'Smell-o-vision" back in the '90s, but it was a flop. It was similar in design to an ink jet printer, but instead of spraying various ink colors on paper, it sprayed various scents into the air. Like in the way every color imaginable can be created from just the three primary colors in different combinations, almost every scent imaginable can be created from a few dozen primary scents in different combinations. the easiest scent to create is Banana - requires one primary scent - and one of the most complex to create is Liquorish - requires a large number of primary scents.
