When I breath in my chest feels like I breathed in cold or menthal type feeling?

My sternum feels a little sore and when I breath in deep it feels cold irritated like a smokef a menthal cigarrette..i havent smoked in 12 years. I do have a slight runny nose. But this feeling I get in my chest is bothering me...what could it be? Its only when I take deep breaths ...sometimes it makes me feel lile I need to cough a little from the vaporish feeling. I havent been around anyone who smokes...any answers are appreciated..