| No | Compounds | e-liquid (n = 72) | Aerosol (n = 72) | P Value |
| 1 | 2-Propanol, 1, 1-oxybis- | 14 | 0 | <0.0001 |
| 2 | Butanoic acid, 3-methylbutyl ester | 12 | 0 | 0.0003 |
| 3 | D-Limonene | 10 | 0 | 0.001 |
| 4 | 2-Cyclopenten-1-one, 2-hydroxy-3-methyl- | 7 | 0 | ns |
| 5 | Hexanoic acid, ethyl ester | 6 | 0 | ns |
| 6 | Linalool | 6 | 0 | ns |
| 7 | Acetic acid, hexyl ester | 5 | 0 | ns |