I know its an old post but i think its important to bump this.
The good dr lost a lot of work and money cos some dicks sell a product that doesnt do what it should.
There is a reason why they changed their name.
These guys are wankers and dont give 2 shits what happens to you and yours so take heed of somebodyelses misfortune.
I will be changing mine asap,it has only been up about 6mths and is my first one so i have nothing to compare this to,as i have been fortunate in my location,but i'll be getting a new one quickly for sure.
Just a thought but if u suffer from any smell around or just inside the room u are using an ioniser works very well.
even a little remmington air purifier on the floor outside the grow will deal with the average home growers spill.
prehaps in a cash crop enviroment it would be best to employ a 2 or 3 pronged approach,ie carbon,ioniser ... or oust type smell removal products in little fans=£4...maybe even an ozone genny for a larger room,but whatever u employ it will protect and give u assurance that things are in stealth the best they can be,after all u can only do so much.
good luck farmers,and stay safe.