So your house doesn't smell particularly nice and you've got company on the way. You can improve your home's scent by burning some vanilla extract (or any other essential oil).
Photo by Monika Wisniewska
Redditor jimothywhite explains:
Put two caps full of vanilla extract (you can use other oils, such as lemon and lavender) in a coffee cup (or oven proof dish), then place it in the oven at 300 degrees [around 150C] for one hour. The smell will start to spread after around 20 minutes and encompass the whole house after the hour duration.
Should last for at least a day.
Although not a permanent solution, if you need to remove a bad smell, this sounds like a good stopgap measure.