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1.
A smell that often wafts off of old men. It is a medly of Old Spice Aftershave, Brylcreem Hair Slyling Gel and Ben Gay.

The funny thing is that, minus the Ben Gay smell, This was probably a hip and manly smell for the average 20 something guy back in the 50's
Was grandpa just here? I detect some Old man Smell.
by Paul June 10, 2005
 
2.
An old withering aroma associated with old men. It consists of farts that don't smell freshly rotten, funk that smells vintage 1969, dust, moth balls and urine. Often found in the homes and clothes.
Since old people tend to lack nutriance in their olden age, their smell seems to have a faded odor to it.
by Mr. Dwayne July 06, 2005