Is it safe to use a small propane camp heater inside the house during a power outage?

I just found these safety tips. See # 3 Source

1. Before you even hook up your camp stove to a propane canister read the directions that came with the portable stove. Besides that hang on to the directions to review often.

2. Inspect the stoves hose connections for any wear or tear from previous use. Especially the O-rings and jet nipples. Replace if worn.

3. When it says outside use only that is where you need to use the camp stove. If you use in enclosed space, like a camper, tent or car, you are setting yourself up for carbon monoxide hazard.

4. Do not leave propane cylinder attached to camp stove when not in use.

5. Use only soapy water to check for leaks on joint areas. If the soap bubbles you have a leak and you need to make adjustments.

6. Keep away from other burnable materials or combustibles.

7. Do not leave stove unattended while in use.

8. Always place stove on a level, flat, and sturdy surface, like a picnic table, when cooking.

9. Before attaching the propane canister check to make sure all your valves are in the off position.

10. Never modify the camp stove, which will render the appliance to become unsafe.

11. Inspect the burner holes for obstructions prior to operation. Do not use until you have cleared the blockage.

12. Cool your propane camp stove before removing the canister of fuel and to clean. Keep your stove in good working order by cleaning after every use. Always do periodic checks of your stove before you go camping to save you time.

Typically not. It’s a big carbon monoxide risk.

Guy just died near here by doing that. I wouldn’t do it!

In an emergency, against all the better, safer, more responsible judgments, I would use it indoors if it was well maintained stove. I would make sure there was a source of fresh air in the room.
I would only use it for a limited time to heat food and then shut it off. I would not use it for heating. Note I said “I”.

Half of the country uses gas ranges fueled with LPG, Natural gas and very few are vented to the outside all the time.

In Japan small table top/bottled gas units are used for meals indoors in the winter. Nabe (hot pot) dinners are quite popular. The cooker sits right on the table and everyone sits around it taking food out of the boiling pot. Apparently they find it safe.

This is the kind of butane stove I have. It is made by Iwatani and burns bottled butane. I only use it indoors.