Na Naemsaena?

The story of Ji Ho-Jae, who was cursed with an unidentifiable smell, and his friend who's followed him like a sunflower for 10 years, Han Geon-U. Because of a strange professor, Ho-Jae begins to feel self-conscious and suspicious of Geon-U, as though he has never known him before. Soon, he ends up having a very lewd dream, however...
(Source: BOMTOON, translated)