How come I'm told not to use my portable camp stove indoors due to

Kapas Outdoor and Indoor Portable Propane Stove, Double Burners with GAS Premium Hose, for Backyard Countertop Kitchen, Camping Grill, Hiking Cooking

Chef Master 90019 Portable Butane Stove - 15,000 BTU

Your Portable Butane Stove CAN Explode!

Is it safe to use a wood burning stove in a tent? - Quora

Is it allowed to use portable camping gas stoves in most apartments? - Quora

In the UK, can I use a butane camping stove in a park? - Quora

Are cassette butane stoves safe to use indoors? I have an Iwatani

Sterno Candlelamp Butane Stove, 9000 BTU. - Sam's Club

Is it safe to use a portable gas stove inside the house while cooking during bad weather conditions (snowfall, high winds, etc.)? - Quora

What are some tips for cooking while camping if you don't have access to an oven or stove? - Quora