Looking for advice please. I live in Southern California. I need plants or vines to cover up a long and rather ugly fence. There is a good irrigation system in place.

The catch is that I, and many of my neighbors, have allergies. So I want something that is either free of fragrance or has very little fragrance.

Ideally something green in color. (But I'd be okay with colors as long as there is no scent that torments the nose and eyes.) If it requires minimal maintenance - that would be a big bonus. It would also be good if it wasn't wildly invasive. I understand that some plants and vines can eventually "strangle" trees in their path.

I've had recommendations to plant Ficus Pumila - also known as "Creeping Fig" or "Climbing Fig" "Creeping Ficus".

Upside - per my research - is that it grows well. And the little green leaves apparently don't emit an allergy-causing fragrance.

Is it the case that there would be virtually no scent?

Downside I've read is that it can be very invasive - and grow way beyond the intended location. I've read that it can develop long hardy roots - virtually indestructible - that can damage submerged pipes.

There are no other structures - eg walls - near the fence. But there are trees. And about 25 feet away from the fence there are septic tanks and related waste pipes deep in the ground. I'd hate those pipes to get damaged.

I'm also curious as to what does the fig vine do when it runs out of vertical fence to grow up. Does it turn horizontal and just weave its way along such structure as it can find?

Is there one species of fig that would be better for my purpose than others?

Any thoughts and experiences on this - and other suggestions - most welcome!