She forgot to mention that the gasoline generator creates massive amount of CO2
"As expected, a linear decrease of the oxygen and an increase of the carbon dioxide were seen during the first 14 minutes." (quote article)
In the article the relationship during the first 14 minutes is depicted in a diagram showing oxygen levels decreasing from 21 % to 14 % and carbon dioxide increasing from 0 % to 3-4 %.
The gasoline generator sounds seductive but large amount of CO2 is also produced. CO methods that dont produce are CO2 is advisable because they give a smoother ride.
Well considering the fact that she is pro life i want give word of caution to her advice. Some of her advice can even be dangerous and increase likelihood of brain damage by promoting methods that are ineffective to deliver hypoxia.
Propane grills create also CO fast with blue flame but it creates way too much eye burning smoke.
Blue flame - complete combustion = only CO2
When burning propane the blue flame is considered safe because it only gives carbon dioxide
propane + oxygen = water + carbon dioxide
Yellow flame - incomplete combustion = CO2 and CO
Yellow flame produces both carbon dioxide and carbon monoxide
gas + oxygen = water + carbon dioxide + carbon monoxide