Okay, it sounds like a propane camp stove is what I want. I'll probably go with one of the two-burner ones for the low profile, stability, and the familiar cooktop.
I appreciate the info about the CO levels, it's reassuring.
And I will be putting in a combo smoke/CO detector anyway, so that's covered, too.
Thank you all, very much!
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Okey-dokey. What's plan B?