Iris Cohen schreef
Perfectly true, but that is not what he meant. The night-blooming white
species, like Angraecums, are always white.

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Quite
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He was asking about species which normally have colored flowers, but
sometimes turn up or are bred with white flowers.

These will not smell any different than their normal colored siblings.

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Actually this is a bridge too far.

Suppose that indeed there are species that normally have colored flowers but
that late in the season have white flowers. If this should be due to a
hormonal inbalance or a disabling of enzymes then there might conceivably
also be a different smell. If these white flowers are the result of a
disabling of something these will be more likely to smell less rather than
more strongly.

Of course this is pure speculation, with not even the existence of
"late-blooming white flowers" established.
Pvr