Definately check your local laws as I am pretty sure that your grow has to be fanced if outdoors and either way have your grower's and user's (if not the same) information posted in a clearly visable place near the entrance of the grow area. It sucks you have neighbors that can't keep their nose in their own business, but in an apartment complex you are not provided with much privacy in regards to the outdoors so I would strongly recommend doing as CGI says and get some indoor equipment either with a carbon filtration system or ionizers to regulate odors. And above all, do as GaGrown says and be very discrete.

JSG.