Where previously you were quite relaxed and focused, you now tense up and question your ability. Your energy is going by the second. This certain person chatters on at you about something, not listening to your responses, while only seeking to talk about their issues and how you can help them. You stammer some feeble responses by way of reply, feeling your strength ebb away until you find an excuse to leave. Sitting in the toilet cubicle a few minutes later, you reflect on what has just happened. Why does this person have such an impact on you and how can you overcome it so that work ceases to be a place of torture? The BBC has some answers, and the involve both the words "explosion" and "infection", even for people who don't work in meth labs.