WO/2007/146201 is referenced by 3 patents.
An odor neutralizer having a deodorizing sheet and one or more odor neutralizing agents associated with the deodorizing sheet. The deodorizing sheet is configured to have at least two generally facing surfaces having a space between them. The space extends along the sheet and forms an air passage through the odor neutralizer. In one variation, the deodorizing sheet may be folded along at least two folds, and the odor neutralizer further comprises a backing sheet to which the deodorizing sheet is attached at the at least two folds. In another variation, the odor neutralizer may have a housing that contains the deodorizing sheet, and the housing may have openings at each end of the air passage. In another variation, the deodorizing sheet may be formed in a generally spiral shape.