@AutoWonders My tent does not have zippers from the inside, it's a 100$ tent. What i did was that i closed my zipper but left a small opening and smoked a whole cigarette blowing it inside then left the cigarette with the ashtray inside, zipped the tent and then opened the inline fan and had a sniff. Same with the perfume.Did you go inside the tent and zip it up before lighting the cig or squirting perfume?