Cách sử dụng
The expression "sniff at" means to show dislike, disapproval or disdain towards something, usually by inhaling air through the nose in a way that shows displeasure or dislike. For example, if someone sniffs at a plate of food, it suggests they do not like the way it smells or looks. It can also refer to someone showing superiority or arrogance towards something. This expression is often used in informal conversation or writing.