Instruct: Classify a given Amazon review as either positive or negative.
Query: MABIS+MENTHOL CRYTALS OPENED MY NASAL/LUNG PASSAGES

I had been looking for an aroma therapy solution to use with my mabis steam inhaler. My wife bought some menthol crystals. I melted some menthol crystals in heated water (after I let it come to a good boil then filled the aroma therapy chamber w/ 60ml of the solution; ONLY USE A LITTLE BIT OF MENTHOL CRYSTAL, NOT MUCH!) Almost as soon as I started using my mabis steam inhaler w/ the menthol crystals solution, it seemed as if my nasal/lung passages started opening up instantly.AGAIN, IF YOU USE MENTHOL CRYSTALS IN THE AROMA THERAPY CHAMBER, ONLY USE A SMALL AMOUNT. TOO MUCH WILL CAUSE A STRONG UNCOMFORTABLE BURNING SENSATION IN YOUR LUNGS AND NOSE.