Popsugar Living Sustainability Uses For Old Coffee Grounds 15 Uses For Old Coffee Grounds 14 June 2018 by Tara Block View On One Page Photo 15 of 15 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 15 Perfume testing aid Sniff coffee grounds to clear your nose after smelling perfume, so the smells won't merge together and confuse you. Previous Next Start Slideshow SustainabilityBudgetUpcyclingFrugal LivingBudget TipsCoffeeDIY