Drug addict

Last week, I went to the Regent neighborhood to interview the residents with another classmate. When we interviewed the second guy who looks like upset.  I asked him if he was OK and got the answer that it was OK. However, we didn't think so because he looks like anxious and breathe very hardly. He got a reddish eyes and looks like very tired. After a while, he found everything was OK and answered our questions. Both of us thought that he must have some drugs. We can also felt a very strange odor from his body. He must be the drug addict. It was my first time to see that. I hope I will not see this kind of guys.