Small time grow, will it need odor control?

If you were to have about 4-5 plants what concern should i pay to odor control? Is that really something that will tip me off? Also, how concerned should i be about helicopters spotting this from the air? 1 400 watt hps..

 

most people grow with clones yet americans buy millions of seeds every year.
how often do you hear about bust being made? when you do its almost always because someone complained or the cops where after something else.

 

A good extractor fan should deal with smell as well as temperature.