Seeing my neighbors gathering ginkgo nuts made me curious enough to try them, and I waded right in without understanding the risks! TLDR— they're not a great food source. It's yet another one of those cases where you have to wonder what "delicacy" means. The actual fruit (looks like a rotten plum, smells terrible) has ginkgolic acids which cause contact dermatitis (think poison ivy). Then the nuts themselves contain…
In university, one year, our building started smelling like there had been a sewage overflow. Pretty soon, everything around started smelling like this - the stores, restaurants, cinema, etc. in central campus was stinking. It was soon found out that the decorative Ginko trees planted in the central part of campus were fruiting (probably for the first time since planting) and the fruit was getting crushed underfoot and carried everywhere. The smell took a few weeks to go away.