[its a kia]

i searched and didnt find anything pertaining to my scenario

out of the exhaust during a cold start and warming up, smoke is billowing out, cant tell what it smells like, my nose is clogged from a cold right now, once the car is warmed up i will drive it and it i will smoke for about one minute then it will stop, just had head work done, bc cams, springs, retainers and new valve seals and cometic headgasket

head work was done about 3 weeks ago and it started smoking about a week ago, its worse than a week ago

could this be the valve seals, piston rings, headgasket?

thanks