神奇的 Charcoal

Had this Oolong water bottle that started smelling funny when my mom put ginseng water into it. Kind of puts me off reusing it, but I liked the bottle so I came up with this bright idea of using charcoal tablets to remove the smell. Anyway, charcoal's also used in stoma bags to help remove the smell of waste products from the body so I am just riding on the same principle.

Although I know the principles, I am still amazed to find out that all the funny smell is gone. Then I wondered if it was an overkill to use 2 tablets instead of one. Anyway, I just wonder why people always say to use teabags to remove odours or humidity. I think charcoal worked so much better. :P