There's a band called The Harmless.
A substance that naturally decomposes into harmless materials is called?
a person that is seldom harmless but always useless.
No, guns are illegal.
they're actually called wood lice and 1 alone is a wood louse, and no, they are harmless
biodegradable.
Sadly, the "Harmless Nonsense" subcategory outlived its usefulness - and was being misused - and was therefore deleted.
Allergy
An allergy is when a person's immune system perceives something that is usually harmless as a threat to the body and launches an attack called an immune response.
Some people feel that emotional infidelity is harmless because they are not sexually active with the person they are attracted too.
A vaccine.
Aids.