https://www.lbc.co.uk/news/humans-contr ... udy-finds/
https://pubmed.ncbi.nlm.nih.gov/38091323/
Exhaled human breath can contain small, elevated concentrations of methane (CH4) and nitrous oxide (N2O), both of which contribute to global warming. These emissions from humans are not well understood and are rarely quantified in global greenhouse gas inventories.
