This thing does exactly what it says. You'll notice very little odor, and it really, really, lengthens produce shelf life.
This technology is already used in industrial environments, and has been 'known' since the 1800s, so, it isn't really new, and it is well understood and works quite well.
Trust me - you'll be surprised. You'll have carrots dry out in your fridge long before they ever mold or rot.