A couple of tea bags in and of themselves probably won't draw a bear to your camp.

Your smell, cooking odors, campfire smoke will all dwarf a couple of tea bags.

I don't really think there's any way to 'smell proof' a camp - not as long as you and your gear are there.  Anything with human scent on it is a possible something for a bear to investigage.

As long as you're not worried about losing a couple of tea bags, or being a caffeine pusher to a squirrel or other varmint, you're probably ok.