I agree with posted above. Your hamster won't smell as long as you clean his sawdust regularly. To ensure your parents are not malcontent, I'd clean it more than once a week. For example, every two days. Please keep us posted on how it goes when (if) you get a hamster!
If the hamster has the habit of sleeping near or even in the place where it pees, which can be common in single hamsters, it might adapt that smell. Whatever you do, don't bathe the hamster because that will remove natural oils in his coat which he needs. If there is a smell and doesn't go away, try changing the bedding to a different brand.
Generally hamsters shouldn't smell as stated above, if the bedding is changed often. They are great at cleaning themselves.