My Korean friends have told me that they all came down with allergies to our plants/trees, on an average of two to three years after they arrived here.
That is a fairly “normal” thing, from what I personally know about such things and proves what I posted. ;^)
I didn’t have allergies til I moved to the DC area.
Walked out to my car after work my first spring in this area and it was totally coated with yellow dust.
My first thought was it some weird factory by-product. My co-worker started laughing and said “No, just pollen.”
It’s bad here.