Latex condoms have bothered me exactly once, and I used them for several years. The one experience was sufficient to put me off of them, though.
Kiwi hits me every time. Banana, only if it's unripe, and then again only some of the time. Avocado, I get the feeling about 30% of the time. With avocado, it appears to be a variance in me, rather than the fruit; I can sometimes eat guacamole (which contains multiple avocados), and sometimes not. I hate celery, but have never reacted to it. AFAIK potatoes and carrots have never bothered me, nor tomatoes. And an unidentified legume in a split pea soup once hit me, but I've never figured out which legume it was. (Powdered peanut butter, but not peanuts or "normal" peanut butter, weirdly enough.)
Short of it - nope. Not surprising at all. Allergies behave in mysterious ways, AFAICT, and extremely inconsistently. A doctor might be able to tell you more.
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