Here are the words with different sounds in the underlined parts:

### Ex I:
1. **Comfortable** - /ˈkʌmf.tə.bəl/ (the "o" is pronounced differently)

### Ex II:
1. **Technology** - this word has a different stress pattern compared to the others.

### Ex III:
1. **Furious** - this word stands out as the odd one out due to its different context and sound characteristics.

Let me know if you need anything else!