Thanksgiving cooking smells are part of the holiday. The less welcome part is finding that the kitchen still smells like dinner the next morning. Start with ventilation, food waste and leftover cooking residue, not another scented product. Some of the biggest culprits are easy-to-miss hosting mistakes, and many can be fixed with simple changes.

Quick overview: run a range hood that vents outdoors while you cook and for 10 to 20 minutes afterward, per the EPA. If you do not have one, or need extra ventilation, open windows when outdoor air quality and weather permit and it is safe to do so. Wipe out the oven, keep turkey fat out of the drain, refrigerate leftovers promptly and take out the trash. A short morning-after reset tackles the remaining odor sources.

7 Thanksgiving hosting mistakes that can leave your house smelling for days

1Not running the range hood or cracking a window
Cooking releases airborne pollutants as well as odors, so ventilation matters while the meal is cooking, not just afterward. The EPA says to turn the range hood on whenever you are cooking, to leave it on for 10 to 20 minutes after you finish, and to cook on the back burners when possible to capture more emissions. For homes without an outdoor-venting hood, it says to open doors and windows to bring in fresh air when outdoor air quality and weather permit and it is safe to do so.
Our practical tip: start the fan before you start cooking, not when the smell shows up, and check whether your hood vents outdoors.

2Skipping an oven clean, so old spills smoke
Before the holiday, check the cooled oven for food and grease residue and clean it according to the owner’s manual. Wolf lists spills and debris inside the oven as a cause of excessive smoke and says to wipe out any that may cause it.
Our practical tip: do this a few days before Thanksgiving so you are not scrambling on the day.

3Pouring turkey fat down the drain
Pouring turkey fat down the drain creates a plumbing problem, not a cleanup shortcut. Clemson Cooperative Extension says never to pour cooking oils or grease down the drain, warning that it can solidify in septic or sewer lines. It adds that hot water and soap do not eliminate grease because it will eventually reform and solidify in pipes. University of Florida IFAS Extension says to pour cooled fat into an old can or jar, wipe pots and pans before washing, and throw out the wipes and the sealed container.
See also our guide to foods you should never put down the garbage disposal.

4Leaving the carcass in the kitchen trash overnight
There are two separate issues here. For food safety, USDA Food Safety and Inspection Service says to refrigerate leftovers within 2 hours of cooking or of coming off a warming appliance, and to cut turkey into smaller pieces, slicing the breast while the legs and wings may stay whole. If you plan to make stock from the carcass, refrigerate it promptly too. See how long cooked turkey can sit out.
For odor, the National Cente 

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