You sound paranoid if that is how you truly react to a single small plant inside your home.
There is no denying growing outside carries it's own set of risks compared to growing indoors.
If you take all possible pre-cautions the only way you can get busted in doors is loose lips.
Outdoors anyone can stumble across your grow, no matter how hidden.
But of course it's just my personal stance and why I don't grow outdoors. You're welcome to do as you will as long as you can accept the risk associated with it.
Last summer was my first grow after taking 11 years off. I was just a little jumpy about risk. I have way more to lose than a few pounds of weed. I slipped up and became a well respected member of the community while I was on the wagon. It's a position I don't want to give up.
I've been growing in the woods since the late 70's, and have never had a patch found by anyone I didn't show it to. Finding spots with good cover and sun is second nature to me. Trusting folks after a couple of friends turned out not to be is a little harder. Now no one sees my smoke until it's in the rolling tray.
And from what I read, fire is a common way for indoor growers to get busted. Not all electricians are created equally.
If I was growing far from my home, with no way to watch the daily coming and going of people on the nearby roads, I would be more worried. But when my neighbors or I see a strange car stopped beside the road, we stop to ask if we can help. That translates into who are you and what are you doing here.