From sexual harassment and power harassment to maternity harassment and alcohol harassment, unjustifiable conduct in the workplace takes many forms. In recent years, however, a new issue has begun receiving media attention: "smell harassment."

The "smell" referred to in the above phrase could be anything from bad breath and body odor to perfume and fabric softener. Regardless of whether a person is conscious of their odor or not, some consider it to be harassment if others are bothered by the smell.

However, unlike other types of harassment, smell harassment — often abbreviated as sumehara — is a very personal and sensitive issue, making it difficult for others to speak up.