will it have bad effect on me?

we had a training course last week, not in my field, but I was requested to attend. I asked some questions, one of chinese MALE collegues (WSN) in other group, just laughing at disregard attitute, and answered the question, wanted to show he understood very well. I was really annoyed by him. it is so rude. I also do not understand, if you know everything, why were you asked for training again? I was worried that this will have bad influence on me since my manager was there also, but he showed disregard on me.