system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is widespread use of antibiotics breeding antibiotic-resistant bacteria, but widespread use of refrigerators isn't breeding cold-resistant bacteria?
gpt
Cold doesn't kill the bacteria. Chemical reactions generally occur much more slowly in colder temperatures, and this includes the reactions that bacteria run to generate energy to reproduce and make toxins. Your fridge basically just slows down machinery of bacteria so that food that would normally spoil in a day will now last 4-5. Food still does spoil, and bacteria still grow in the cold.

Additionally, bacteria that evolved to survive better at colder temperatures would be worse at surviving in warm temperatures, and wouldn't survive outside the fridge. Similarly, antibiotic resistant bacteria are typically wiped out by normal bacteria once you stop using the antibiotic.