Use 'odious' to express strong negative feelings towards a person or situation. His odious remarks made everyone in the room uncomfortable.
Pro Tip 2/3
Intensity
'Odious' is more intense than simply disliking something; it conveys deep revulsion. The garbage strike left an odious stench in the city.
Pro Tip 3/3
Formality
'Odious' is formal and may be seen in written critiques or serious discussions. The editorial described the corrupt policy as an odious abuse of power.