There's a scene in Greg Egan's "Diaspora" where a couple of AIs wandering in the wild encounter an old soda can imprinted with Coca Cola's logo, marketing sloga

There's a scene in Greg Egan's "Diaspora" where a couple of AIs wandering in the wild encounter an old soda can imprinted with Coca Cola's logo, marketing slogan, etc. They freak out (having read about this ancient evil called "advertising" in their history books). Afraid that even looking at it will infect them with memetic plague. They carefully look away from the soda can while burning it to ash with a laser.