Some people can smell sounds, see smells or hear colors, according to researchers Juan Lupiáñez Castillo and Alicia Callejas Sevilla of the University of Granada in Spain...
"There are people for whom time units evoke colors," Callejas wrote in his research. "It is also common for a synaesthete to see colors when listening to words, sounds in general or music notes (people who can see music, for instance). There are also cases, although fewer, where people can see colors in flavors, others perceive flavors or experience touch sensations when listening to different sounds, some link flavors to touch sensations, etc."
As late as my teenage years I used to see music. Actually, it's a little more obscure than that. I would "sense" colors, sometimes in 3-D, in music. I might not see the color blue, but a song would be "blue" while another might be "orange". Sometimes a song would evoke more than one color--again, I wouldn't see the color or pattern with my eyes, rather I sensed them somehow.
It's somehow comforting to know that others could use their senses in non-standard ways.