1The doctor assured me that the vaccine was harmless and would not cause any side effects.
2Is it harmless to eat food that has been left out of the refrigerator for a few hours?
3The new policy is intended to be harmless to the environment, but some critics disagree.
4If you are concerned about the harmless bacteria in your gut, you should talk to a doctor.
5The company claims that their new product is harmless to pets, but many owners are still cautious.