Abstract: A scent propagation device (10) for luring animals and then masking the scent of a human who is hunting game has a line (21) of substantial length that is wound on a free-moving spool (20). The spool (20) is rotatably mounted within a leak-proof container that is comprised of an upper housing (11) that sealingly mates with a lower housing (12). A plug (40) in the body of the container may be removed to open a channel to the interior of the scent propagation device (10) so that a liquid concentrate of a desired scent may be added. The line (21) is absorbent and becomes saturated with the scent. To disperse the desired scent, the user withdraws the line (21) from the container by tying the line (21) to a fixed object and walking away from that object. The line (21) is guided to exit the container through a bushing (26) that also partially meters the scent concentrate and extracts excess liquid concentrate.