I've been warned about it.
I've seen it done to other people.
And this morning it happened to me.
Just arrived back in Cambodia with new born, took him outside this morning for a walk in the cool air, as its so hot inside. A grandma who was walking along came to talk to me.
She said something like :Your baby is cold, wait until the afternoon then he wont feel so cold. He will catch a cold if you bring him out now with not enough clothes on.
I wanted to tell her that when we spent the whole day in aircon (on the way back the airports and planes all had aircon) he was happy and slept well. I think he actually finds it too hot here.