I wouldn't worry too much about it as long as it can't get outside, or
you don't have dogs and cats that could harm him.
I used to loose all of my herps when I was a kid. My iguanas were free
roaming pets that had the run of the house. Sometimes I would loose one
for a few days or so. They will come out when they get hungry. They
will also follow the sun around the house to bask in.
Once one pushed out a screen, jumped or climbed down the side of my
house (20') and took off into the woods. I came home to find the pushed
out screen in his favorite basking window. I was crushed. He never
came back, but I did find him about a week later up in a tree near my
Sorry for the story, my point was that he probably won't go far.