A Danny get adopted by Batfam angst misunderstanding fic where they find Danny chugging anti-freeze and freaking out because they think he's trying to commit suicide, and Danny who has not revealed his identity keeps getting interrupted when he tries to explain.
Danny can and will eat things that no living being can, his ectoplasm can break down any non-ecto based materials and turn it into nutrients and energy.
Due to this he is immune to all poisons, which is great for Danny, what isn’t great is trying to explain that to some well meaning heroes who witnessed him some highly toxic alien fruit he found. He just wants to enjoy his new snack, the spicy sweet tang is addictive AND HE WISHES THEY’D STOP TAKING IT FROM HIM!