[AnotherGoodName]

It used to be the way to decaffeinate coffee

https://www.landryswarr.com/did-you-know-decaf-coffee-used-t...

In general if you drink decaffeinated coffee I'd check how it's decaffeinated. Even newer processes that use dichloromethane, ethyl acetate or triglycerides are dicey imho. The supercritical CO2 processes seem safe though.

Truth be told I'd encourage anyone drinking decaf to really think about the benefits here.

[voxadam]

Wow. I knew decaffeination using dichloromethane (aka methylene chloride) was once a thing prior to the popularization of industrial scale supercritical CO2 but I had no idea benzene was ever employed.

[anamexis]

Is there any evidence it is unsafe?

[AnotherGoodName]

Benzenes harm wasn't known when it was used. The newer processes have not been proven either safe or the unsafe.