I would say to spread seed of aromatics along perimeters and along any pathways or entry points. I get mint seeds( out of a pack of hundreds you'll get Alot of different types of mint) and lemon balm.
These plants seed well and spread rapidly, but usually need to be disturbed to release their smells.
If you were to surround the area so any hikers walking through walked through the aromatics patch before they got close to your grow, it would help cover the dankness.
Of course if these plants don't grow in your area, it would raise some suspicion. But I think mints are very well spread
I think thats called "cardinal vine". I have a bunch of those, the have nice red tube flowers that the hummingbirds loves, but they're a climbing vine so they might not work as a cover unless they have something to climb on. Its also illegal in a number of jurisdictions because its considered a dangerous invasive species.
Imagine the irony of getting busted for pot because someone from the nature conservancy called botanical immigration enforcement on you for growing non-native plants.