My wife made me stop for a while when we still lived in an apartment. If she didn't then I am sure the neighbors would have started to complain. I think the wort process smells good, like making bread, but others are not so happy with the smell.
Now on the rare occasion that I make a batch I do it outside on a turkey fryer setup. The advantage of this is I can do a full boil of the wort starting with about 7 gal of water, until it is down to about 5 gal at cooling time.
One of the reasons I do not brew much is because of the bottling. If I had one of those 5 gal co2 keg setup I would brew more often.