Ringing the dinner bell

It's the only thing I could think to call it.
For the last year or so I've been letting all the snakes in an enclosure know it was feeding time by blowing air across the top of the food in the direction of them. Whether it's pinkies or worms this always seems to get a response in the fact the snakes rush me to get some chow.
Tonight, I opened one of the large enclosures housing a group of my adult female radixes. They knew it was just a social call as I didn't have any food with me and didn't blow any air into their hide.
Being the instigator that I am I thought I would play a little joke on the girls. They were all looking out of the hide so I blew some air on them and got an immediate response. Most of them came right out to me.
So, what have I done here?
(A) Conditioned snake to think that air blowing on them means food.
(B) Conditioned snake to the scent of my breath blowing on them means food.
(C) A combination of A and B
(D) Really confused my snakes.
(E) Some of the above.
(F) None of the above.
What do you think?