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1.
To spray perfume/cologne liberally in an area, attempting to make it smell better. Unfortunately, the new scent can be so overpowering that the area smells worse after this process. This downside is more common from cheap men's body spray.
Not to worry! I always carry around a can of Axe! I'll perfumigate this place!
by Deseejay September 28, 2010
 
2.
To apply too much perfume to an already foul area such as sparying Pine-Sol in an elevator that someone farted in.
Who shit a X-mas tree!
Somebody must have perfumigated in here.
by Hillman Tiger October 14, 2011