It can work for or against you. The smell of newness is positive. This scent can be achieved by applying a fresh coat of polyurethane to natural wood or latex paint to walls. The smell of cleanliness is important to the selling environment of your house. Beyond actually cleaning, lemon oil or lemon wax can help create a lasting scent of freshness.
Fresh flowers can also be effective.
Sweeten the refrigerator with a box of baking soda. Smells to avoid include strong pet odors, tobacco, cooking and oil or gas. The entry is where the first impression of the interior is created. Here you have the opportunity to make a big statement in a small area. Repaint the entry using light, neutral colors.