I have no idea how US ovens compare with UK ones but my oven always (ALWAYS) gives off smoke and smells from the top burners the next time I use it after I've been roasting potatoes in it.
For me, roasting potatoes involves a Very Hot Oven and putting the potatoes in a tray of hot fat (which spits all the time) on the top shelf of the oven, thus guaranteeing that the top burners are covered in sprayed spat fat.
I figure this has to be burnt off, and that happens the next time I use the [oven-located, top-burner] grill thingy in my oven.
I try to remember to shut the door between the oven and teh smoke detector.
My recommendations are:
1 buy a fire extinguisher
2 remain in the kitchen for the duration of the smell from the oven; prolly ten minutes max ...