Well...if you dont tell anyone (even friends), if you do it in a place where even someone poking around couldn't find it, and if you take care of things like exterior noise/smell, then why would anyone ever find out? Theres no possible way. 2-3 plants can be done in a 2'x2'x3' cabinet no problem.

Id be willing to bet that 95% of all people that get busted, talked. All it takes is one comment to the wrong person and you can risk it. But if your married, Im guessing your not 17 years old, and as long as you dont go parading around the fact with t-shirts or banners...2-3 plants is not going to get you busted.