unaromatic
/ˌyuːnærɒmətɪk/ or /ˌjuːnɑːrɒmətɪk/Definitions
1. adjective
Having no scent or fragrance.
“The unaromatic soap was not pleasant to use.”
2. adjective
Lacking a pleasant or agreeable quality.
“The unaromatic personality of the character made the story less engaging.”