[mysterio]

According to an allergist I saw on TV over the weekend, one can be allergy free, then in a later stage of life, develop an allergy. Yikes!

Yep. I was allergy free all through childhood. In my 20s, I got really sensitive to fungal spores and dust. Still not allergic to poison ivy, though, as far as I know.

[A Ruckus of Dogs]

Yep. I was allergy free all through childhood. In my 20s, I got really sensitive to fungal spores and dust.

Same here, although I still had food allergies. The nasal allergies did eventually go away.

[Doctor Stochastic]

Still not allergic to poison ivy, though, as far as I know.

I have some yard work for you if you are interested. More seriously, poison ivy allergies get worse with exposure.

[Salvey]

In my 20s, I got really sensitive to fungal spores and dust.

Funny how that works: in my 40's I became allergic to fungi known as liberals, lefties, democRATS.