| Similarity | Rank | |
|---|---|---|
| radon | 0.861 | 32433 |
| Monoxide | 0.796 | 90956 |
| Mold | 0.715 | 27410 |
| Remediation | 0.714 | 67735 |
| Ozone | 0.711 | 41186 |
| VOCs | 0.704 | 56195 |
| Gases | 0.692 | 90904 |
| IAQ | 0.688 | 93590 |
| Dioxide | 0.688 | 69551 |
| Radioactive | 0.686 | 64607 |
| Methane | 0.685 | 69623 |
| monoxide | 0.679 | 23477 |
| Ammonia | 0.679 | 78473 |
| Groundwater | 0.677 | 66053 |
| Detectors | 0.677 | 93824 |
| Chlorine | 0.675 | 54131 |
| CO | 0.671 | 11074 |
| Sediment | 0.668 | 95198 |
| Formaldehyde | 0.663 | 99913 |
| Sulfur | 0.660 | 70589 |
| Asbestos | 0.660 | 31689 |
| TCE | 0.659 | 83931 |
| MTBE | 0.656 | 96906 |
| Combustion | 0.655 | 74853 |
| Detector | 0.649 | 57528 |