Is there a sign strictly prohibiting bringing food into the office?

Halo, forget about matching the picture, just make the whole background softer. Express this meaning, but be more tactful. Never use red letters to directly say: It is strictly forbidden to bring food into the office! You can use warm reminders or something that won’t offend people. For example: For the sake of everyone’s office environment and health, please do not eat like this in the office