Above and beyond everything, Methane is flammable. I have seen it used in industry and I, myself, would not want to be anywhere near it. now, yes small amounts may not be too flammable, but after what I have seen through the years, that gas would be a huge no and off my list.
I also second everything that @Praestat_Mori said in his post, as it is so warmly and thoughtfully written. Just wonderful.
Having you as a good friend here makes my life so much better and I wish nothing but the best to/for you always.
Lots of huge hugs, love and the knowledge that you are a wonderful person.
Walter