Abstract: An odor-neutralizing bag is an apparatus that is a sack-like object containing other objects behind a sealing mechanism. The apparatus may include an inner enclosure and an outer enclosure. The outer enclosure may take the form of a backpack, duffle bag, sling-on, or more. The inner enclosure, contained within the outer enclosure, may be affixed to the outer enclosure or may be removeable. The opening to the inner enclosure is closed by a roll-top type seal. The long faces of the two opposing bands of the roll-top seal are pressed together, then folded over at least once in a single direction in order to seal the entrance to the inner enclosure. The ends of the rolled bands may then be buckled together to secure the roll-top seal closed, forming a physical odor barrier. The apparatus also includes a bag lining, which is odor-proof or may contain odor-neutralizing pads or layers.