Today, I went into Gary’s room to give him a blanket, and he bolted out of his cage and bolted around the room several times.
I don’t think he’s scared of me, as he was following me. (But much faster than usual)
Normally, he tends to move fairly slowly for a bunny, so this is very strange.
He’s running as if though a pack of wolves is chasing him, and doesn’t seem to get tired.
What could be the cause of this?

Also, is smoke inhalation bad for bunnies?
My dad often burns the food when he insists on cooking, so I get very worried that it’ll affect Gary’s lungs.