.... and you ended up with CO2 right.......?
I used one to make a negative ion generator.
There were about 5 of us working in a closed room with only 2 doors, no windows with a bunch of printers being repaired and tested.
By mid afternoon most of us were getting very drowsy.
I built a negative ion generator and installed in a cardboard box and placed it on a cupboard, and it really did wonders.
One day an engineer came in and asked what was in the box with the 5 needles sticking out.
The boys told him what it was and dobbed me in as the builder.
I was then called up to explain the deal.
When I finished, the engineer told me it was all a lot of rubbish.
After everyone assured him it wasn't, he asked how I knew it was pumping out negative ions, and not positive ones.
I explained that it was dependent upon the direction of the diodes.
He demanded to know how much voltage it was pumping out and how we could test it.
I produced an Anderson static tester and gave it to him.
He pointed it at the generator and it read 4KV positive and gave me a very surly look.
I pointed out to him that you need to calibrate the tester first and then take a reading.
When I showed him how it was done, he took another reading, which read just over 6KV.negative as specified.
He then got all huffy and told us to go out and get a commercial one.
We all ignored the demand and went back to work.
As a back note to his, A few years later I had reason to go to a Sagem factory (French exocet missile producer) to look at their premises where they were assembling and testing telex machines.
They had this long bench about 50 metres long with finished machines running under test.
I noticed that they had 3 negative ion generators fixed to the ceiling.
I asked the manager what he thought of them, and he said that it was the best things they did to the place.