If your looking for data and statistics to support my claim. I don't have it.
If I tell you the water is safe to drink and show you that the entire city is using the water without issue for years. You will still be skeptical.
My point is If you use a Genturi as it was designed and set it up according to the instructions you will not have any CO issues. You can take that statement at face value or you can throw in a lot of what ifs that involve operator error.
Nothing ever built is immune from operator error however the Genturi is a worthwhile device that works as designed and will not fail as long as it is set up correctly.
I'm not sure what sphere you are in, but this is a post in an RV forum. I'm not making a claim at a regulatory agency or testifying in front of the consumer product commission. I am merely and end user who can verify the Genturi works as designed.