Vermicomposting can be performed indoors and it is space efficient and doesn't require sunlight, which allows you to allocate parts of your living quarters which aren't suitable for growing produce otherwise.
You can manufacture your own vermicompost using cheap, accessible materials and the initial batch of earthworms can be harvested from the soil where outdoor composts are in contact with the soil or from a store that procures them as bait for fishing.
I've only seen two vermicomposts to date, both of which have been kept in a dry room with ample natural ventilation. There is some smell released by decomposing organic material on the top which quickly dissipates as you step away from the vermicompost.
I'm still researching before my attempt to start my own in my apartment and I would like to address the issue with the smell to make it more appealing to visitors to consider starting their own, since I will be keeping my own in a small enclosed room.
The worms are sensitive to light and the compost still produces some heat, keeping it above the average room temperature. I believe it would be possible to use something similar to an enclosed growing bag, where fresh air comes from the top and deposits of active carbon or a filter at the bottom can be placed to fully deodorize the air before it escapes into circulation.