I need to correct you there Nolan78. The water vapour mostly...

I need to correct you there Nolan78. The water vapour mostly comes from the sea and it increases because of higher temperatures which are themselves caused by CO2 and other greenhouse gases. The water vapour from burning hydrogen would be tiny by comparison to the water vapour caused by CO2 emissions. Hydrogen use would have no meaningful effect compared to the entire ocean warmed as a result of extra CO2. Also water vapour released into the atmosphere dissipates after 10 days. CO2 lasts for 200 YEARS, and it continues to have the effect on the ocean for all that time.

Scientists don't say what you are saying, it's just some guy on facebook trying to fool you. Don't fall for it.

My source: https://www.aap.com.au/factcheck/water-vapour-global-warming-claim-is-all-steam/