Is AUTHOR wrong in the post ? POST : I was at the designated smoking area of my employer, enjoying a cigarette. This area is WELL away from the building, off the property entirely. 

I have no idea why, but one lady made a point to walk all the way over to me and say “you know smoking is bad for you” with the utmost condescension. 

I have no idea why I did this, but without thinking, I replied “so is talking to strangers”. 

She threw a look and walked away. I have no idea why I said that, it just sort of came out without me consciously thinking about it. 

Some of my friends have said it was rude, but I considered it rude that she came all the way over to me, where I was minding my own business, in the designated smoking area, to inform me something that’s common knowledge, as if I’ve been living under a rock. 

AITA?