Is tree sap toxic?
Correspondingly, what Tree sap is poisonous?
According to the Guinness World Records, the manchineel tree is in fact the most dangerous tree in the world. The tree produces a thick, milky sap, which oozes out of everything - the bark, the leaves and even the fruit - and can cause severe, burn-like blisters if it comes into contact with the skin.
Beside above, can tree sap kill you?
It looks like a regular tree, but the Manchineel can kill you. Everything about it is extremely toxic. If you touch its leaves, they will cause "a strong allergic dermatitis." It's so bad that, if you stay under its foliage while it's raining, the water will cause instant blistering wherever it touches you.
Even without touching the tree itself, people (and car paint) have been burned by the thick, caustic sap as rain washes it off branches overhead. The tree holds a cocktail of toxins, including hippomanin A and B as well as some yet to be identified.