Why was she squeaking?

Just wondering what it could be? It kinda sounded like sneezing in a way, it was about 6 or 7 little pants, which were quite high pitched and squeaky..

She did while sorting her bum out, and then flopped down to nod off again?

Hello..I'm a newbie here but my bun did the same a few days ago. She jumped into a basket of hay and shredded paper to have a dig about and gave the same noises! I presumed it was sneezing from the dust..haven't heard it again yet