Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Package not sealed.

This filter is supposed to have activated carbon imbedded in it for the purpose of absorbing odors. It can only absorb a finite amount of odor starting at the time of manufacture. Therefore, it should be hermetically sealed at the factory to prevent it from absorbing odors before it is installed by the purchaser. The one I bought was just stuck in a cardboard box. It may have been stored for months in a smelly warehouse full of, for example, new tires. I don't believe it could absorb as much odor when I purchased it as it could have absorbed when it was manufactured. The improper packaging makes it no better than a plain filter in my opinion.