I don't think this would work on a large scale like your's, but perhaps there is a scaled-up version. What we just bought is a Febreeze air filter that we plugged in right outside the rodent/snake room. Currently, you cannot tell we have the mass of pets we do. The little thing is really doing a pretty amazing job.
You would probably need 2-3 of the things to get near the same effect, but there is probably a larger version you could purchase at a hardware store.
The key is to look for a filter that eliminates odors. Most filters just remove dust and allergens, which doesn't help much with the smell.
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Lincoln, NE
0.1 Pastel, 1.0 Pastel het Pied, 0.1 Pied, 0.1 Cinn, 1.0 Black Pewter, 1.1 Normals, 1.0 Thayeri, 0.1 Thayeri X Alterna, 0.1 crazy cat, 1.0 husband

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