People cough because of me

No matter where I go people always cough around me and no im not paranoid. From classroom no more than 10, people in my car, jobsite, stores, house and etc always cough when im around.

Im a electrician who works in the high raise sector and usually get like dirt, concrete dust and grease on my clothes. I always switch out my work clothes to my regular clothes when I get in my car from work, I even wash them in a laundromat.

I think its airborne because people will still be coughing when im on the other side of the wall, 50+ft away from me or even when im on the 2nd floor. I started coughing like crazy and I think my body adapted to it but occasionally will cough too. Some people would feel like they have something solid or heavy in their throat.

My coworkers who's in the same environment as me is coughing when Im in the shack and its been happening to me for like 4 years now.