This is such a great hack and one so easily forgotten when we walk down the cleaning aisle at the supermarket.
Never again buy those smelly carpet/sofa deodorisers. They are expensive and not necessary. All you need is a packet of bicarb of soda.
Sprinkle the entire area you want freshened with the bicarb of soda and simply leave for 15-20 minutes.
Vacuum up the powder and woolaaah! The fabric or carpet will be left fresh again.
Your vacuum cleaner however may look like it has just sucked up a bag of cocaine ;), so you may need to empty it.
Cheers to using cheaper cleaning products!