i searched saw nothing on this so how to make a personal carbon filter.
this is useful for an apartment or a place where you cant afford to get caught smoking.
you need to go to walmart or better yet your local pet and aquarium store. buy the aquarium activated carbon that is used in the filter. get a toilet paper tube take a hand kerchief and rubber band it around one end. fill your tube with activated carbon put a straw or tube into the activated carbon make sure its packed in there. duct tape the top of toilet paper tube around the straw or tube. what you now have is a personal use carbon filter.
just inhale blow throught the tube and there will be no smell.
may the force be with you