[epicureanideal]

Is there any way to wash them out of the lungs?

At the same time could smokers get a lung cleaning treatment?

[jijijijij]

No. Because of their needle shape, they wander deep into the tissue. The notoriously associated cancer is found in the mesothelium, a layer around the lungs.

[thereisnospork]

It probably could[0] be done, but good luck getting an FDA approval.

[0]Speaking of smokers specifically, it is entirely possible to 'breathe' oxygenated liquid per fluorocarbons ('PFAS') which would very likely dissolve and 'wash out' tar from the lungs.