So you're saying that beyond everything else Musk is also making contributions to the marketing of greenhouses? Because "living space" is always related to humans, as far as I can tell.
Though some other comments I think mentioned that it probably wouldn't be too dangerous to allow the occasional stroll through the greenery. Doesn't sound too far fetched if you consider I can choose to hang out at the park without a hat in exchange for an extra dose of UV radiation for the day. Not saying UV is on the same level as cosmic radiation, it's just something to think about :)