Can't remember if it was the 80s or 90s, but Carl's Jr. (and probably Hardee's on the East Coast) produced a commercial that was more gross and creepy, than actually scary. The camera enters a house, with tense music playing - there are red drips and splatters all over the floor...the viewer assumes it is blood. The camera moves up a stairway...same thing...red splatters all over. Finally, the camera enters a room, and there is a person eating a huge Carl's Jr. cheeseburger, with ketchup dripping all over him, the floor, etc.
Carls Jr. got a lot of bad press for this ad, and had to pull it after it ran for just a couple of days. I'm guessing executives might have lost their jobs over this one.
The question is - why would you want viewers to associate your food with blood?
I looked online, but could not find this ad anywhere. I'm guessing that it was buried very deeply.