I just picked up some Xikar purofine butane from my local cigar shop. I was wondering if any of you have used this for making BHO. It says it has near zero impurities in it but I just can't tell if there is an odorant in it( darn allergies have me all stuffed up!). Here is a link to show you what it looks like. XiKAR Triple Filtered Butane Fuel 400ml Vintage Chic Cigar LLC What do you all think? Thanks!