We have tested the ethanol and were directly headache. I asked the next day a warranty claim and was contacted within minutes by the seller. At first I thought, now he wants to persuade me to keep the ethanol and all that can not be. But far from it. He had a lot of understanding and was super directly concerned and apologized profusely for the inconvenience. Together we talked and tried the "problem" to get to the bottom !!! We went through everything step by step, I was always at any time cancel the feel and easy to make a warranty claim. The seller even sent directly 6 new bottles to view this my charge was not faulty.
Basically, however, everything was different. Had I the fireplace after switching to ethanol this thoroughly cleaned, I would never get a headache. This I did after the notice from the seller, and see there, absolutely no smell, no headaches, no nothing. Just as it should be. And with such a top seller I have my bio-ethanol found Dealer of life!
1000 thanks for this great support - I thought that there is no longer something on the Internet ....