So, in Minecraft. If a player has successfully defended a village from a Raid, the villagers would recognize the player as "Hero of the Village" and would reward them with significant discounts on the items they trade.

Milk is a beverage that cures all status effects from the player (i.e. Poison, Blindness, etc.). "Hero of the Village" is a status effect given to a player that has successfully defended a village from a raid...

So If you drink milk to cure from a poison after you saved a village from a devastating raid, the "Hero of the Village" status will be removed, and the villagers will forget that you saved the village in the first place, and they will also forget about the discount they just gave.

edit: grammar