If queued up as Jungle, once you enter pick/bans have a pop-up to remind you to take smite.
It is impossible to jungle smiteless (without the actual summoner spell equipped not just a nice leash) on most champions. That's just how it is sadly. And sometimes we humans forget things like to take smite as the Jungler.
Also, might not be a bad idea to have default summoner spells for each role.
Top:
Jungle:
Mid:
or
Bot (ADC):
Support:
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Obviously, if you want them rearranged or different summoner spells it would be up to you to change them. But this way I am not stuck with
as the support or
as the Jungler.