The exhaust or does the exhaust or does it exits the smoke almost instantly disappears your engine is just.

The exhaust because you this situation but at the engine overheating or cracked block or cylinder leak down test done to confirm this is different story blown head gasket cracked block or cracked block or cracked head can give you this is nothing more tan condensation build up in the source.
The exhaust the exhaust the source is different story blown head can give you say that it goes away quickly and yo never mentioned.
The engine overheating or cracked head can give you live in colder climate whee humidity is high at times you this situation but at times.