I do hope it's just reverse sneezing.
I have checked out other videos & although she has similar symptoms, hers have got more frequent & not just when she gets excited. Plus when the vet squeezed her neck on the sides, she showed that it hurt.
She has always 'honked' occasionally, even when she was tiny, & I've always used a harness so I'm pretty sure her trachea hasn't been damaged by a collar & leash.
She is a bit on the tubby side, & im currently cutting back on her food, trouble is shes one of those that is always hungry!
It's reassuring to know that some of you have also experienced the 'honk'! And yes, rubbing her throat & cuddles do seem to stop them.
Anyway the X-ray is on Tuesday so will know then, I think your comments have helped me to stop worrying so much, so thanks lots.. By the way it's 3.30pm in the uk & chi chi hasnt honked yet & we've got snow, so we're both wrapping up warm & going for a nice walk.. How much better is life with a chihuahua?!