bad piston rings maybe?
Yes
Because there is antifreeze int he system and it takes a while to burn through. Also replace the bottom hose too. <> If it smokes from under the hood, It has antifreeze on the engine exterior, You can wash it off. Or just drive it and it will burn off. If it smokes from the exhaust, There is engine damage.
The engine is pooped.
You have a blown head gasket.
Have you spilt some on the radiator?
That would require fixing / replaceing the VALVE SEALS in the heads.
the valve stem seals are probably dried up and leaking when engine is at rest
its burning oil and needs new piston rings
blown head gasket!
If your 6.5 Chevy diesel smokes white smoke when you first start it up, it could just need warming up. It could also indicate an issue with the motor.
No.
Yes through inhalation just like if you are near someone who smokes