Smell is coming through my ac

Hey all hopefully you can help me.

Ive got an attic grow going. Now the furnace and air conditioning coil is in the attic because it's a two story condo complex. My problem is every time I turn on my central ac it automatically starts reeking of weed.

Do you know where the air is being pulled from? I figure if I know where it's pulling air in to cool and blow throughout the rest of the hose then I can put an air scrubber there.

Thanks for the help. It's getting hot durning the day and just flipping on the ac makes my house instantly smell like a despinsary. Fine if I'm by myself but I can't have that if people come over.

Since I'm in the attic I didn't think I would need a scrubber so I don't currently have one.

Anyone...anyone? Bueller...Bueller...Bueller...

odor being pulled into return air is all I can think, is your grow located near the return air?

Probably should get a carbon filter.

I'm not really sure where the return air would be or what it would look like. Gives me something to google and see...and mr2shim is right...I need to get a filter.