Contrail emitters for buildings (smoke)

[Deantwo]

We are still missing a way to make lights, like streetlsmps and such. So I think it is safe to say more is coming.

I still hope for minor sound effects, but don't know if they could be part of the design or just be there in general depending on building type.
For example make factories make some working sounds when their manufacturing is running.

Smoke emitters could be made to only make smoke while the building is working or when it does or doesn't have power.