I don't have cough but sometimes when I go into a place a moment later there will be person starts to cough. Last time I met my friend that we didn't see each other for a long time, having some talks then after a few minutes he suddenly coughs. It keeps bothering me what does it mean? When I go into a place or talk to someone they will start coughing.

I don't have a cough but sometimes when I go into a place a moment later a person starts to cough. Last time I met my friend that I didn't seen for a long time, having some conversation after a few minutes he suddenly coughs. It keeps bothering me, what does it mean? When I go into a place or talk to someone they will start coughing.

I dont have cough but sometimes when I go into a place a moment later there will be person starts to cough. Last time I met my friend that we didnt see each other for a long time, having some talks then after a few minutes he suddenly coughs. It keeps bothering me what does it mean? When I go into a place or talk to someone they will start coughing.

I don't have cough but sometimes when I go into a place a moment later there will be person starts to cough. Last time I met my friend that we didn't see each other for a long time, having some talks then after a few minutes he suddenly coughs. It keeps bothering me what does it mean? When I go into a place or talk to someone they will start coughing.