Odious MacLear Tea is a consumable drink in We Happy Few. Drinking it will give characters a high stamina boost but will also inflict food poisoning. It is also spiked with Joy.
Two cups of Odious MacLear Tea can be found inside of the MacLear residence, meaning it was presumably created by the MacLear sisters as a faster way to end their father's life.
It looks the exact same as regular Tea and can easily be misjudged as tea in the player's inventory.
Odious Tea (Left) and regular Tea (Right) as seen in game