OP,

Heating with a gas stove = BAD IDEA

The little magic candle pot heaters? BS. Basic thermodynamics.

Your best option is to get a small catalytic heater that really is safe to run indoors WITHOUT opening a window and defeating the purpose of heating in the first place. This is an excellent unit:

[link to www.amazon.com]

Then start buying the gas-grill type propane tanks... you can get them anywhere, carry them in one hand, and store them indoors, out of sight if need be. Get an extension hose so you can put the tank in another room if that makes you more comfortable.

A gas grill tank will run one of these heaters for a couple days, easy. This is the only SAFE & PRACTICAL method I am aware of to heat a small living space in a city environment. No fumes, no smoke, no noise.

Be safe & stay warm. ;-)