(or colour-to-smell synesthesia)
It could be considered a type of visual-olfactory or conceptual-olfactory synesthesia
- although
this type of synesthesia is highly consistent (same stimulus = same smell), it
doesn’t occur every time the synesthete sees or thinks of the colour in
question. This “part-time” nature actually seems to be quite typical of
synesthesias with an olfactory concurrent.
- fruity smells are relatively common.
-
alternatively, they are often smells that are difficult to describe, not
matching any known smells in real life.
- smells
can be triggered in conjunction with tastes, and some synesthetes even have
difficulty in distinguishing whether the perception is a smell or a taste.
Colour-to-taste
synesthesia also exists, either coexisting together with colour-to-smell in the same synesthete, or separately.
Go to the page on colour-to-taste synesthesia
Here are
some descriptions written by people with this type of synesthesia:
“I can
sometimes smell them better than other times, and the smells are always
something I’ve never smelled before.”
“They (the
colours) usually have to be accompanied by a texture or pattern to make it
happen. I sometimes smell and taste abstract art.”
“The purer
the colour was and the larger the space it filled the more likely it was for me
to smell it.”
(Source: Pau 365, my own experience with colour-to-smell synesthesia which consistently occurred when I developed hyperosmia during a period of my life, greatly heightening my sense of smell)
The
correspondences between colours and smells are idiosyncratic and vary according
to the person in question. Here are the pairings of some synesthetes:
Dark blue =
rain / Pink = Bubblicious gum, strawberry yoghurt / yellow = fruit, autumn /
Light blue = clean clothes / Violet = fruit punch
Light blue
= a smell of silk, dry late afternoon air / Yellow = the smell of the sun on a
summer afternoon / White and also light grey = spaciousness, freedom, very
neutral / Black: a dark, dry, square, low smell / Lilac = very synthetic, high,
happy, like cheap yoghurt / Bright pink = like a perfume, hard to describe,
roses and violets perhaps?, deliciously diagonal, a beautiful smell but strong
(Source: Pau 365, my own experience with colour-to-smell synesthesia which consistently occurred when I developed hyperosmia during a period of my life, greatly heightening both my sense of smell and my synesthesia)
We can all link colours and smells:
cross-modal correspondences
People in general, and not just this type of synesthetes, are able to make seemingly “logical” associations between sensations produced by the different senses, and colour/smell is a good example of this. Probably due to our past experience, most of us would agree that a light pink colour suggests a sweet, synthetic aroma, while dark brown might give the idea of earthy smells, for instance. We don’t give this relationship much thought and we are not bombarded by this kind of experience as we go about our daily lives, but the consensus is fairly general. So if we show someone a particular colour, or an object or scene where this colour predominates, and ask them what it smells like, many people – synesthetes and otherwise – can give us the answer. That doesn’t mean they all have colour-to-smell synesthesia of course, unless they happen to have regular conscious experiences where the colours evoke real smells, unmistakeable and consistent, physically perceived or very strongly felt.
A few curiosities:
People who
smell (or taste) objects after being blindfolded and “use synesthesia” to identify their
colours are not synesthetes, or at least what they claim to do has nothing to
do with synesthesia … for the simple reason that a person with this type of
synesthesia needs to be able to perceive the colour in question (i.e. see it)
before they can smell or taste it.
A few years
ago, aerospace engineer Zachary Howard invented a “synesthesia mask” that lets
people smell colours. It’s an interesting experiment that would be fun to try out, even though there are
differences from what a colour-to-smell synesthete would actually experience!
Related phenomena:
Colour-taste synesthesiaThis page last updated: 24 December 2022
This page is about color-smell synesthesia or color-to-smell synesthesia
This page is about colour-smell synaesthesia or colour-to-smell synaesthesia
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