I personally prefer Carbon Filters for odor control. Can makes good ones, as well as Phresh. Just sayin.
Keep a cheap griddle near the grow room. Put it on super low and put a small pan with about an ounce or two of downy fabric softner in it. Let it simmer. Before it completely boils turn it off. Your neighbors will think your running an illegal underground black market laundry mat.
How about planting some jasmine or rosemary bushes around your house. It will not only do a great job of masking odors but if some gardening stuff got seen by someone then they can also see that you have a hobby around your place.