Not a answer to your original question but a funny story none the less. My sister in law and a couple friends left a camp fire burning on our farm one night. I got in my stand the next morning. The smell of smoke was so strong I couldn't breathe. At the first crack of light I thought there was heavy fogg on. As daylight began to set in I realized it was a cloud of smoke. The camp fire had got out and burnt about 20 acres of under growth and leafs through the timber over the night. It had came with in 20 yards of the wooden ladder stand I was hunting out of from behind. As I sat there in complete shock as at the time I had no idea that anyone had been on the farm the night before. I couldn't help to begin to stomp and snort (after not seeing flames) as I figured the morning hunt was ruined after waiting the week to get in my honey hole stand Saturday morning. Not including the 3:00 am wake up, drive and walk to stand. Just before I climbed down to start the investigation. 3 deer walk out of the smoke into the field edge. I sat back down and continued to see deer all morning long through a cloud of smoke. Lol . On the up side I haf a great scent cover that morning!