It seems to me that if masks don't protect you, and you aren't symptomatic, and you're covering your mouth when you sneeze or cough, there really is just no measurable benefit to wearing a mask or reason to do it
If you're freaking out over the corona virus, do me a favor and unfollow me. People need to take same precautions as they do for flu. Period. There is absolutely no need for this kind of panic.