I recently heard that cooking with biogas is easy to get leukemia. Is there a scientific basis?

It's purely a rumor, and the appraisal is complete!

The main component of biogas is methane, which will produce water vapor and carbon dioxide when burned in the air. These two substances are non-toxic.

The cause of leukemia is closely related to receiving large doses of radioactive radiation in life and work (for example, the stone used for decoration contains more radioactive components without detection) and contacting more organic chemical poisons or pollutants, such as benzene, formaldehyde (new furniture wood materials, clothing fabrics) and toluene (paint or banana oil). ), nitro compounds (such as TNT explosives) and azo dyes!

It is speculated that such rumors are probably released by profiteers who sell bottled liquefied gas or "relevant departments" who install pipeline gas and natural gas to scare the people!