The smell will go eventually but washing all surfaces down with detergent will remove the tars that give off the smell.
Try having an Aga – you cook everything inside the ovens and the smells go straight up the flue so it’s easy to forget that croissant or pie that you left to warm and open it next morning to find a big lump of carbon. Gti Junior once put something in the hot oven on a polyethylene plate, which melted and dripped onto the oven floor where it seethed and boiled for hours, turning slowly blacker and blacker. By the time I found it, it was looking like black tar boiling away. I scraped it off with a wooden spatula and cleaned up with paper towels, leaving a pool of hot oil. Within a couple of days the intense heat had completely evaporated the oily patch up the flue.
