Stinky Ice? Ever since about three months ago, my rime maker started making rime...

Ever since about three months ago, my rime maker started making rime that had a wierd appetite to it. I tried to look up the manufacturer and call upon Sears but no one give me any info. We do not have a filter on it which is what I expected needed to be changed. I wonder if within is something that needs to be cleaned?
Answers:    My rime got similar to that too...probably some food in the freezer making it smell (not hermetic good)...i cleaned everything (whole freezer) out and then put a arm-n-hammer baking soda pack surrounded by the freezer to get unwanted smells...rime is as good as tentative now!!
i would read out clean out the together thing or I don`t know u should put a filter on it...if u can.