You know the ones at wal mart that are the blow up ones. I saw one that says its 10'x6'x22". But I figured with the blow up ones you would have to take a foot off each side with the kind it is. But I was wondering could you use it? I know when I got my son one it had that plasticy smell or something and he smelled like it after he got out. What would you have to do to get it not to smell like that. Is it safe?