I missed this bit yesterday. Just because you smell shit does not mean there is methane. It is odorless.
World’s first carbon tax on livestock will cost farmers $100 per cow
https://www.cnn.com/2024/06/26/business/denmark-cows-carbon-tax/index.html
Livestock farming has a particularly big impact, accounting for around 12% of global emissions in 2015, according to the United Nations’ Food and Agriculture Organization. A share of this pollution comes from methane, a potent planet-warming gas produced by cows and some other animals through their burps and manure.