Interesting to me that the man claims to smell the natural gas, and that's when he started burning his tap water.One problem is that in a previous life I worked in a gas plant, and was shown the facility for adding an order to the gas so that people would be able to smell it. I was told that you don't smell natural gas, you smell the chemical that the gas company adds to the gas so that it can be smelled.
In order to assist in detecting leaks, a minute amount of odorant is added to the otherwise colorless and almost odorless gas used by consumers. The odor has been compared to the smell of rotten eggs, due to the added butyl mercaptan. Sometimes a related compound, thiophane may be used in the mixture.So how did that natural gas he's getting in his water get the chemical in it to make it smell???In mines, where methane seeping from rock formations has no odor, sensors are used, and mining apparatus such as the Davy lamp has been specifically developed to avoid ignition sources.
You’re using logic.
Sadly that is quite ineffective in arguments like this.