https://www.npr.org/2023/10/17/ [login to see] /gas-stove-utility-tobacco
In the late 1960s, natural gas utilities launched "Operation Attack," a bold marketing campaign to bring lots more gas stoves into people's kitchens.
The gas utilities called Operation Attack their "most ambitious advertising and merchandising program ever." But as it got underway, concerns were becoming public about indoor pollution from gas stoves, including household levels of nitrogen dioxide.
Around the same time, Dr. Carl Shy, a federal public health researcher, was looking into the health effects of nitrogen dioxide. In 1970, Shy published a study showing that families exposed to greater levels of the air pollutant nitrogen dioxide outdoors had higher rates of respiratory illness than families in less-polluted areas. The research caught the attention of the gas utility industry, and they asked Shy for a meeting.