I’m working on purchasing a duplex which has a 1 bedroom unit that has a noticeable cigarette smoke odor to it.

You'll also want to limit tenants with a lot of noise or odors.

All items must be kept neat and orderly.All heating vents will be kept clean and free of dust, dirt, and mildew.No noxious, offensive or foul odors are to be permitted to emanate either inside or outside the rental unit from any source, including but not limited to spoiled food, accumulated trash or debris, liquor and beverage containers, dirty laundry, sinks, toilets, bathtubs or showers.

*grumble grumble*Is there a way to contest this?

Also wear a good mask/respiratory as this product has a very strong odor when you are using it.

You might get to charge for cleaning if there is a dog odor or hair everywhere still.    

He grumbled a bit:  "they said this was a recession proof business, its not." 

Make sure the area is dry before doing any repainting or reconstruction.If the odor comes from the carpet, first, fix the humidity issue that causes the musty odor.

When she leaves you will have to tear out the carpet and pad, paint the sub floor with an odor-blocking primer, and then put new flooring down.

While we can grumble and complain about how our money system is mismanaged and how our government officials on both sides don’t know what they are doing, unfortunately grumbling and complaining most likely is not going to help us.