Since I have two dogs and a child, my family room often smells less than fresh. My son is always bringing in random items he finds outside (many of which have not-so-pleasant odors), and I used to worry about how my house smelled when guests came over. Now, I always freshen my rooms using a cotton ball before I have visitors. To get a clean, fresh-smelling room, simply soak a cotton ball with your favorite scent and place it in the vacuum canister. Vacuum the room as you normally would, and the scent will be slowly released as you work. You can use just about any scent you like from perfumes and essential oils to cleaning supplies—anything that has a nice smell!