I never really considered that I might have synaesthesia.
Do we all have some synaesthetic ability? – health – 30 September 2008 – New Scientist
So, you think you’re not synaesthetic. You might have to think again. New research shows that many people have traces of the condition without realising it.
Synaesthesia is a condition in which people make unusual associations across the senses.
Some people perceive letters, numbers, words and smells to have innate colours, while others can taste music or imagine time to have a fixed special form.