I know one way would be to use @@latex: ... @@ w/ ascii counterpart
each time, but I would rather envision a single macro, which then gets
defined in different way depending on the export, in order to reduce
redundancy.
You can put all the different alternatives together? I do the following
for degrees Celsius:
#+macro: degc @@odt:°C@@@@latex:\(^{\circ}\)C@@
Looks ugly but I don't have to look at it often. In text, I simply have
{{{degc}}}.
(minor aside: I wish macros had been defined to be used with [[[degc]]]
instead as much easier to type than {{{degc}}})