[Altavia]

Originally Posted by blueash

You are more than welcome to make that suggestion as this agency always has a public comment option available.

Here is a recall just issued for carbon monoxide risk for one brand of gas stoves sold at Home Depot, Lowes and Best Buy
ZLINE Recalls Gas Ranges Due to Serious Risk of Injury or Death from Carbon Monoxide Poisoning | CPSC.gov

Unrelated, not nitrogen dioxide...

My bet is those units shipped configured for propane and not NG.