形容词

1. 有毒的;有害的
A noxious gas or substance is poisonous or very harmful.

2. 令人厌恶的;讨厌的
If you refer to someone or something as noxious, you mean that they are extremely unpleasant.

1. injurious to physical or mental health

e.g. noxious chemical wastes
noxious ideas