Now, 4 years later, I recieved a personal message about the same problem from a couple who have bought the same tent, with the same unbearable smell. I will post my reply here also, for the benefit of others. Shame to James Baroud!
"...I am really sorry but I do not have very good news for you. 4 years later this smell is still there, although it is more bearable now. The tent has not been used much due to this problem, so it has not had the chance to vent very often recently, but that said, in the beginning I let it sit open for weeks - in the sun, in the wind, you name it. They do not know how to mix and cure their resin properly. I got no reply from them whatsoever.
So... really sorry for the bad news. If you vent it, it will eventually subside, but it will take a very long time. One thing I would suggest, which I have not tried, is an ozonator. It removes organic smells incredibly well and permanently, but I am not sure how ozone will react with the resin, and with the fabric and plastic parts. You should do a research before trying, at there is literally nothing else which could get rid of this smell fast but ozone. But ozone destroys certain plastics.
Just for info, I know what the problem is exactly, as I have worked for some time professionally with epoxy and polyester resins.It is either an expired and spoiled resin batch, or most likely, a bad mixing (or even incorrect ratio resin/hardener) before application. This leaves some of the resin in a permanent uncured state, and as this seems to be polyester resin, it releases styrene, which is on top of all toxic. They should have never used polyester resin for such an application - this is done only to cut costs and to make the process faster. Only epoxy resins should be used for a tent.
This is all a total shame. Really sorry."
