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14 days agoI live in a small flat too. Usually, I put my compost in a big plastic bucket with holes underneath, then hang it outside the window. Bring it indoor when it’s freezing outside. I also use a relatively big pot, put it beside my other plants on a window shelf. But I only put in normal garden wastes and a small amount of fresh kitchen waste, as the spaces really weren’t enough, they already take at least a year to decompose. Not sure if it’s doable for you?
Edit: They don’t smell if they decompose right.
If you gradually put in vegetable wasts, cardboard paper, and maybe some soil, keep them airy and moist, and turn them often, in the worst case they only have a little bit unpleasant smell in the beginning. One of my compost pot is mostly indoor, it has a smell, but it’s a pleasant smell.