thanks guys for all of your inputs.

Depends on the smell of the white smoke!Does it smell of burnt oil or raw fuel?
just a smell of fuel/ oil. really can't tell the difference between burnt and raw.
Since you say ,its only 3-5 secs,this rules out condensation.!
that's good to hear!
If its water accumulated in the cylinder chamber,you will notice a drop in your coolant level.
when i have a siginificant drop in coolant level, i get a warning sign. however, haven't gotten any.
Raw fuel can be a leaking injector?
Do you notice this overnight or everytime you start it up?
only over night. and it only lasts for 2-3 secs. and the temperature was around 30f.