Roomba-like atmosphere filtering small bot

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Don't air scrubbers do exactly this anyway, except better since they have an apparently infinite capacity? There's not much point to having a moving one, since gas physics guarantee a stationary one works just as well. And if it has a limited capacity, then it'll be worthless anyway - air siphons are surprisingly useless at de-gassing rooms, since they don't hold nearly enough gas to do it effectively.