lol Melissa - I thought the same thing that's why I asked my vet. He said that they are so close to the ground that even if you take your hand and hit your carpet...all the dust that rises goes right up your baby's nose. (guess I need to clean better) From what I understand - it's not dangerous....just their was of sneezing...
"Young puppies can reverse sneeze, but the first episode typically occurs in late adolescence. Stay calm and get it to swallow with one of the methods described above. In a few seconds to a minute, it will run off to play. Reverse sneezing is a harmless phenomenon which needs no vet consultation and no medical treatment whatsoever. It is very common in toy breeds. I took this from this site: Yorkie Medical Information (which was the first one to pop up when I googled reverse sneeze) - but I'm sure someone on here can explain it better - or read some of the posts....they are full of others having the same concers and a lot of suggestions on what to do when they have a "sneezing" attack. Good luck ....I'm keeping my fingers crossed for a "ezeens" (reverse sneeze) diagnosis!!!