Tho 2 other thing I forgot too - a few peeps have said about venting, which is fine enough solution for sure, tho if u do, do be careful ur no jetting it straight out as certainly as blatantly a constant jet stream funnel of hot air pumping out side of ur house would look bit odd!! Venting into another room for free heat is good answer too.
But secondly, also that would only be again if especially dark elsewhere. Plus they rarely ever just fly over looking about anyway. It costs in excess of $20K an hour to keep their types of choppers flying so they tend not to just jolly about in it! It's pretty much always used for pre-arranged , larger scale operations, missing people or chasing stolen cars.
So don't worry still!! Smell, other people and your own self are far more of a danger to the grow then imaging camera's ever will be!