Am i getting paranoid or what?

Did you go inside the tent and zip it up before lighting the cig or squirting perfume?
@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.
 
I changed my ducting today which connects the filter to the fan in case there were some tiny holes which i could not see, no difference though, i could still smell the cigarette smell in my outtake.This time i closed the tent, i turned on the ventilation and blowed the smoke through the passive intake.

With my 5" passive intake hole opened i get some sunction, if i minimize this hole to lets say 3" i getter better suction. If i open another hole in the tent to get more passive intakes i lose some sunction. Isn't that weird?

Also how much negative pressure is good?
I noticed an inch of a small tear (slot) in one side of the tent could that be the problem?

Again, thank you all so much for your precious help.
 
I have a feeling you're thinking about your tent completely inverted buddy,

The round holes with sleeves are usually for forced intake or exhaust, primarily used for ducts, located all around the tent,
The passive intake is the screened window with a flap cover, towards the bottom

The "standard" idea is to have your carbon filter in the top corner, ducted through a round hole, sleeve closed to seal it,
With everything else closed you will have serious negative pressure in there, sides caving in to each other,
Now you play with how open you'd like the flap over the screened window at the bottom,

More open, more air flowing back in, means less negative pressure

Causing air to be sucked up through your plant, passed the light, into the filter, and out through duct/fan, hopefully scentless

I'm not really sure how you expect to smoke a cig and then proceed to try and smell it though?

Good luck
 
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