Good point.

I want to point out that vodka is usually made from grains, not potatoes. And I’d honestly be surprised if there’s enough non-alcohol substances left in a given vodka to trigger someone’s food sensitivities - I’d assume it’s one of the additives (especially common in Russian vodka), not the plant it’s made from.

Also, if you’re allergic/sensitive to wheat or potatoes, you should notice that in food way before you notice it while drinking.