They claim that the drug has no 'harmful' [='bad'] side effects.
These conditions can be 'harmful to' plant/animal life.
The chemical kills 'harmful' [='dangerous'] bacteria.
(..) You got a stain. ...we're the chess club. I just have bad gas. What are you testing me for? To see if your gas could be harmful to others. He's just scared. Talk to him. Look, Mr Burski, I heard a systolic murmur in your heart, which is most likely nothing, but if I don't check you out, (..)2001 TvShow: Scrubs Title: My First Day Season: 1 Episode 1