Infectious Curses

This datapack reworks curses in several ways :

Curses now spawn in enchanting tables, on mobs, and in villager trades as well as in treasure chests.
If you are within a small range of any entity wearing cursed armour, there is a chance your armour will be cursed (every tick).
Adds 5 new curses
- Curse of Weight : increases your gravity by 200%
- Curse of Explosiveness : chance to explode every time you are hit
- Curse of Bad Luck : unlucky things may happen to you...
- Curse of Darkness : you always have the darkness effect (for 20 seconds even after removing cursed armour)
- Curse of Weak Legs : You walk 50% slower and cannot jump.

Curse of Binding and Vanishing are also compatible with this datapack. 

New item : Curse Dispeller : Hold a cursed item in your offhand and then consume the curse dispeller to remove all curses from the item (other enchantments stay)

Was made in about an hour after I was inspired by this video :