1. (noun) the quality of being noxious

• harmfulness
• noxiousness

1. (noun) the quality of being noxious

• morbidity
• morbidness
• unwholesomeness

1. (noun) the quality of being noxious

• fetid
• foetid
• foul
• foul-smelling
• funky
• ill-scented
• noisome
• smelly
• stinking
• loathsome
• nauseating
• nauseous
• noisome
• offensive
• queasy
• sickening
• vile
• noxious