smelly problems

So I'm 6 weeks into flower and things are getting pretty smelly. I have two carbon filters in my grow room. One is hooked up to a 6in inline scrubbing outside and the other is an inline hooked up to a 8 in also scrubbing outside. I have no smell problems outside the room or outside so everything is fine. But once I turn on my home a/c you start to get the smell thru the vents. I have no vents in my grow room that could be causing the smell to go thru. Any ideas on how to stop the smell from coming thru the vents?

sounds like some air pressure builds when the AC is on
which could push/pull its way into adjacent air spaces
this could be hard to fix since the AC season is just starting

if your ac unit uses media filters (slide in "paper" type, not electric), then slide in a carbon filter attached to your normal filter. it will help greatly. you will need to replace the carbon filter about every 3-4 weeks. they are found at home depot, lowes, menards, ect for about 10.00. they are cut to fit style.

Sweet thanks , I'll check those out.