Hi, LaRae and welcome to BB! We ask members to please not respond to old threads (this one is from 2012) as it can cause confusion. You will also get more responses if you start your own thread with your topic. Thanks
Will do my best to answer your Q but your best bet is to start a new thread. Sneezing could be caused by 3 things: Allergies, possibly to dust or dusty hay, a foreign object stuck up the nose (hay seeds can sometimes get caught up there) or a respiratory infection.
I'm going to lock this thread due to reason mentioned above.