Go to
www.biocidesystems.com. They sell
Chlorine Dioxide odor eliminators. I ordered a pack, and SORRY but I haven't tried them yet. The product is eco-friendly. My husband had used these in his old airline days, when they wanted to eliminate odors on commercial airplanes, but he didn't realize it had been deregulated for regular folks like us to buy.
They say it will: "eliminate any severe odor including cigarette odor and cigar smoke, skunk odor, pet urine odor, vomit odor, soured milk odor, mold odor, mildew odor etc. It will also decontaminate by destroying harmful pathogens, spores and fungi that can lead to diseases and staph infections."
I hope they're right! If you try it first, let us know!