i have the same problem i smoke a pack and a half a day and dont smoke when i hunt. Not more than 10 minutes after i get into my stand i have to cough, i carry a bottle of water with me and when i feel a cough coming a drink a little water it works for a litlle while then i do the same, it holds back on a lot of my coughing but eventually i still cough into my sleeve. Time to quit smoking i gues its just not that simple though.