taint

fe’l verb

1. To be affected with incipient putrefaction. Meat soon taints in warm weather.
2. To contaminate or corrupt (something) with an external agent, either physically or morally.
3. To spoil (food) by contamination.
4. To be infected or corrupted; to be touched by something corrupting.

ot noun

1. A contamination, decay or putrefaction, especially in food
2. A mark of disgrace, especially on one's character; blemish
3. Tincture; hue; colour
4. Infection; corruption; deprivation