Why Does My Presence Make People Uneasy, And Cough

I have been having something very strange happening lately. I'm 16 years of age and about a couple months ago I became very anxious. The reasoning behind it was that my family made fun of my body odor at church. Ever since then I became very concerned over how I smelled. To the point where I showered 3 times a day and bought over 10 deodorants. Since after the incident at church I couldn't stop sweating when around people. I went to the doctor 5 times and they said there was nothing wrong with me. Ever since then I got into a deep depression to the point where I felt hopeless. This got so bad to the point where I wanted to commit suicide. Luckily, I began talking to a counselor but it didn't help much. It to return to school and I sat in my first period and everyone in the room would spontaneously cough. At first I didn't pay much attention to it. After months past, no matter how far away or near from people I was there was always someone coughing when near my presence. People still cough when near me and I asked my brother why he does it and he tells me that his throat dries up. For an instance once I got on a transit bus and as soon as I got in, people began to cough. It made me so anxious to the point where I began to die of sweat. Then everyone around me began to move away from or just stare. It couldn't be a smell problem since I always wash my clothes, and only wear it once. I take daily showers as well. Ever since the deep depression, I have gotten xanax as medication but haven't taken it since I do want to rely on a drug. The coughing began as soon as I returned back to school, and it made me become more introverted since I used to love talking and lauging. Now, the people around me say that I'm different and too serious. In the inside I feel a really sad and haven't laughed much since then.