If it seems insecure where you are I wouldn't grow there. Find a spot where no one would possibly go. Like in the middle of a thorn patch or something like that. The smell will be strong depending on your plants genetics. Most of the time if the plant is hidden from sight people will not be able to find it based on smell alone. And most people won't connect that smell with weed. Chances are if the plant is hidden it won't get good sun so I suggest you move it to a more secure place.