| Malodor score | Degree of odor |
|---|---|
| 0 (none) | Odorless |
| 0 < Score ≤ 1 (threshold) | Barely detectable odor |
| 1 < Score ≤ 2 (moderate) | Detectable odor |
| 2 < Score ≤ 3 (strong) | Strong odor |
| 3 < Score ≤ 4 (very strong) | Very strong odor |
| 4 < Score ≤ 5 (over strong) | Unbearable odor |